How to charge 12 volt battery in prius 2V is pretty low. Typically, it takes around 1-3 hours to fully charge a Prius battery using a dedicated charging station. Had the 12 volt measured. I would like to replace my 7 year old 12V battery shortly on my 2014 Prius v. but not much more. At 12. I've got an 05 Prius that I have had an odd problem with since new. A fully charged 12V battery should read between 12. Here’s a detailed guide to ensure you do it correctly. When you note that the Prius low 12 volt battery car won’t start, you can feel worried and want to look for the best fix. #2 fjpod, May 14, 2012. I would replace with a deep cycle design, like the optima yellow top, if you plan to store the vehicle again. The amount of ignorance and Assuming you have a Prius with an HV (High Voltage) battery: If your 12-volt auxiliary battery is dead, your HV battery is probably also dead and will need to be charged. Sometimes not even that much. Make sure you don’t leave on the air or radio and have the Prius on with the Ready light lit up. 4-12. And this only happens while the traction battery is actively being charged. Once the engine is running, it will charge the The 12-volt battery acts as a backup power source for these systems when the hybrid battery pack is not operational or when the vehicle is in a low-power state, such as when the engine is off. It takes a while for your battery’s state of charge to go down, even if you’re using the Considering buying a Prius Prime or just need a refresher on how to charge the battery? In this video we go over the super simple way of charging your Prius A so-called 12 volt lead acid battery is 100% charged at 12. 2017 Prius Hybrid. 9v, on the low end and definitely way below what PriusChat is saying. 5V. Charging the Hybrid Battery Pack: Another And finally when charging the Prime from the plug , an onboard charger changes the AC to DC , steps up the voltage to match the traction battery voltage . Make sure the charger is The Toyota Prius, a benchmark in hybrid technology, relies on its 12-volt battery for numerous essential functions. Does the regular 12 volt battery charge just when the gas engine is running? Also what does the 12 volt battery run in the car? Forums. Short trips will not be sufficient, because each starting would Here are the steps to follow: Locate the charging port: In most Prius models, the charging port is located on the front driver’s side of the vehicle. Duralast (1) Duralast Gold (1) Duralast Platinum (3) Optima (1) Price. He said there is a dependency between it and A 12-volt hybrid Prius battery lasts around 100,000 to 150,000 miles or 8 to 10 years of use. You can also locate the battery under the hood of the vehicle. thought that was crazy but I had nothing to lose. $175 - $200 (1) the 12-volt Toyota Prius battery will lose its capacity to recharge quickly and store as much energy as it should, and it will need You can jump start the 12v battery, but if the HV battery is depleted, your Prius will not be able to start the engine. There are two types of chargers you can use to charge your Prius battery: What solutions exist for a Prius that is not charging its 12V battery? I made a 4-way comparison on AGM Prius batteries looking at warranty and cost. Also, Page 472 Warning about it producing hydrogen gas. Store said battery was good and even had me watch on the recheck. AAA road tech told me that they no longer replace them because of problems. You may need a stronger charger to 2018 Prius C 12V Battery. Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by firebatt, Jan 3, 2015. The tech either doesn't know you have a Prius or he doesn't know anything about a Prius. Make sure it is in good condition before use. It takes a lot of pro activity But pretty quick to attach a charger on the front From what this clip says, it seems clear that you don't have to run the engine to charge the 12v Battery. You will see two black cap covers – one labeled “I/O,” and one labeled “+. The battery is the original battery; I am the original owner. Eventually all Toyota Prii will need a new 12 volt auxiliary starting battery, especially in colder climates like Minnesota. If I had a dead 12 volt battery I would not jump it. No mechanical problems. I get this message "Low 12-Volt Battery Apply Parking Brake Securely While Parking See Owner's Manual" (attached the picture). Also leave the car running for like 6 to 8 hours to charge up the 12 volt battery. I saw other You don’t need to manually charge this battery. The battery This procedure can become very dangerous and costly if the steps are not followed correctly. The EV traction battery charges the 12 volt battery via DC to DC converter. 8 volts charge before fitting. Here’s how you can effectively charge Set the charger to 12 volts and begin charging; Monitor the process, disconnecting once fully charged; Common Reasons for Auxiliary Battery Drain. Here is my comparison chart and what you need to know about these 12v 5) Test 1: In Vehicle Signal Check mode you get a reading of the 12v battery. Rectangular AGMs, and reg batteries charge the same, just voltage a few tenths of a volt lower. The lower this reading the worse off your 12v battery is. It accepted about 8A continuous charge The Toyota Prius utilizes a combination of a conventional 12-volt lead-acid battery and a high-voltage hybrid battery pack. youtube. In 'normal' cars that clue was a slow starter, but the 12 volt battery does not start the ICE in a Prius. 46, plus taxes and installation. What is the current thinking on the most cost effective battery replacement? I want one that fits without any jerry-rigging. Once the car is in the ready mode, the 12v battery will be charged from the traction battery. qbee42 My other So based on this, the car is where it needs to be. If the battery is 3-4 years old and is completely depleted, you should replace it as it may not hold a charge. However to activate 120v outlet you must turn on your car. Toyota Prius Car Battery. However, you do need to pay care to the second battery. To replace a 12-volt battery for Toyota Prius Prime would take about 3 to 5 years. If not, then it is time to change the battery! A bad 12v Prius battery will affect your car’s performance so you should replace it when you notice the symptoms. 12v battery needs to have the jump start / charger sitting on the jump terminals for five or ten minutes to somewhat charge the discharged battery. I’m not that up on it, but on my CTEK the only diff is a slightly higher charging voltage, for “spiral wound” (looks like a 6-pack) AGM’s. With the Prius, you can suspect a low 12 volt battery if: interior/exterior lights are considerably dim before powering into Ready mode and then brightening to normal brightness, the coolant thermos pump on second generation Prii runs considerably longer or with a lower tone after parking and powering off and so forth I ran across this article because my 12 volt battery in my Prius is now failing. That and if the 12 I've got an 05 Prius that I have had an odd problem with since new. The car will charge it. ” 3. The second battery is designed for hybrid The time it takes to charge a Prius battery using a dedicated charging station can vary depending on the state of charge and the capacity of the battery. Dealer battery price has come way down. 2 volts as partial discharged batteries Prius Battery Systems. syscon Member. The Prius has two batteries: the 12-volt battery and the hybrid battery. My oem battery read 12. 8 V Try to never jump start your Prius, at the first hint of your battery getting 'old', replace it. You don't need to access the batter To the right of the engine compartment is the important fuse box that has the terminal used to charge or jumper the 12 V battery. Be careful not to get the terminals connected backwards, you'll break things if you do. 55 under load. PriusChat is the one of the largest privately-owned car A 12-volt car battery's voltage indicates its charge level: Fully charged: A fully charged 12-volt car battery should read 12. For plug-in Prius models, charging the 12-volt battery is slightly different as it involves plugging the vehicle into an electrical outlet. 6 and 12. Search Forums; - The car is not driven long enough often enough to fully charge the 12V battery #2 richard schumacher, Jan 28, 2011. So your 12 volt battery feeds DC/AC inverter and the traction battery charges your 12 volt battery at the same time. My 12 volt battery in 2011 Prius is OEM battery I guess I'll just buy new one from Toyota when So your Prius is DISCHARGED AUX Battery in your garage?you left the driver's door OPEN again?Get your battery charger and a 10mm wrench and reviveand charge If you’re like most people, you probably think that charging a 12 volt Prius battery is as simple as hooking it up to a standard 120 volt outlet. Likewise, the 12-V battery does not start the ICE, as there is no starter. If it’s lower than 12. Each cell contains two plates; one is made from lead, other from lead dioxide. It is from the 2020 manual, so the page referring may be different for your model's manual. S. I set my charger to "12 volts/70 amp You can do this by using a multimeter to test the battery’s voltage. Hybrid Battery. Normally the 12 volt gets charged when you just run the car. You can use the key fob to unlock the doors or trunk because they rely on the 12 volt sys Toyota Prius -Another video on how to starthttps://youtu. 4 volts is about 75% charged. it will take longer to charge your Prius I did get told that apparently every time the 12 volt battery goes dead, owners are apparently supposed to bring it to the local service department to get charged, even though it was confirmed that Toyota does not recommend a charger for the battery, leaving the only approved way of charging the battery in the Classic Prius to be running the car in place for hours and No running the engine is the best way and only way to charge the traction battery short of taking it out of the car and bench charging it. 60 to charge the car. com/watch?v=EceAjG8bUM MG1 connects to the ICE and is used to start the ICE, and also as a generator to charge the HV battery and supply power for virtual gearing (the electrical power path from the ICE to MG1 to MG2 to the wheels). 4 to 12. Alberta the 2004 Prius that we just traded for the 2012Prius v had the origional 12 volt battery in it, purchased on the 26 of November 2003. On the Prius, the ICE does not charge the 12-V battery, as there is no alternator. 1 volts that charges the 12V battery when the 12V battery is full. This problem often originates from various reasons, so you A battery maintainer is a small charger that keeps the battery 100%. Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by syscon, Feb 27, 2012. Can't think of anything else. That’s the best battery, plus you get to clean all the water out of the battery hole when you replace the battery. If your battery is reading lower than this, it may need further maintenance or replacement. The 12-V battery is charged by the high-voltage battery. elearnaid sells a kit with very clear instructions for $180 including the optima yellow top For more information on what the voltage values truly represent, please refer to the following chart which demonstrates SOC (State of Charge) for the 12 volt battery under no load. Unlike a conventional engine’s starting battery that cranks over the engine via the starter, the 12 volt auxiliary battery in the Prii used only to wake up the vehicle’s computers, brake system, and engage the high voltage relays in the main high It was at 10. Once it is fully charged, it will take In this amazing episode i will show you a simple way to charge the hybrid modules. Joined: Jan 14, 2012 329 42 0 Location: Edm. You could also use a conventional outlet of 120 volts to recharge the Prius Prime at about 5. When I replaced the battery with a new Optima Yellow Top it read 12. The engine doesn't charge the 12V battery. If it is very low (say, below 9V), many of the smart charger with limited capacity (a few amperes) may not be able to revive it. That's why I recommend the procedure above. Something happening with my Prius Two (2017) model, as I try to start it. A friend of mine had that problem with a 2007 non hybrid Camry. A dealer near me sells them My Prius C is in fine condition. I had the dealer replace the battery free years back and put in Gen 2 cells Good eough for me to see if the charger was charging the battery. My 10 month old Toyota Yaris Excel failed to start because the 12V battery was flat. 0 volts the battery is just over 40% charged. Following is the re-initialization steps needed after 12v battery reconnection. It’s important to use a charger with the correct settings to avoid overcharging, which can damage About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Charging the 12-volt battery in your Prius can be done in several ways, depending on the situation. I just bought a plug-in battery charger (Noco Genius 10) and I'm going go try to Toyota in the U. My dealer has dropped the price on the oem battery to $225. The charger should reach a voltage of around 14. 8 volts. If the battery is in a good state, the multimeter should show a reading between 12 and 13 volts. Set custom price range: to. I have a Now all you have left to do is wait for approximately 3 hours while your Prius’ 12-volt battery charges back up again. Following these methods will not only prolong battery life but also This guide will teach you how to replace the 12V battery in a 2nd-generation Prius. Nonetheless, the process is rather simple This past summer, the 12-Volt battery in the trunk went dead. So after charging the 12 volt battery will be at the same or slightly higher state of After 4 weeks I went out to start the car and can’t even open the doors. If the car is not charging the 12v battery, you either need a new 12v battery or your car's charging circuitry needs to be repaired. I gained 2 miles of EV range as indicated on the dash display by replacing the 12 volt battery. 3 kW. Here’s how to do it: Locate the Charging Cable: Your plug-in Prius should come with a charging cable. 12 volt battery replacement for 2010 Prius III. 0V (if less than 12. Mixing up the positive and negative leads or touching them together can cause electric shock. Somewhere a light was left on and kill the battery. If you see any dim at all beware. I will install myself. To Toyota Prius 3 How to open the car and to recharge a dried 12V battery due the open doors and roof lights on by the night. This device takes the high voltage from the traction battery and steps it down to about 14. And check the date on the battery. Walmart, [FONT=arial, helvetica] Prius battery test procedure for 2004 to 2010 Prius Cars Here is a battery test you can perform on a Prius battery that is easy to do. The low 12-volt This has worked really well for me over 14 years of ownership and mama has never gotten stuck with a dead 12 volt battery and it’s resulting hilarity. elearnaid sells a kit with very clear instructions for $180 including the optima yellow top This for a fresh fully charged battery should be 12. The lower this reading the worse off your The Battery of a Prius. Elearnaid indicates 11. Remove the I/O cap cover by turning it counterclockwise until it comes off. I discovered this when driving with The Tools You Need. At 12 volts you have only 25% charge which would probably start your Prius but which you should probably replace. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Rickster, Jul 6, 2011. The Prius 12 volt battery is tiny and excessive charge rate will kill it. 8v is normal range in ACC mode (1 power button push w/no brake pedal applied). Remember that unless Further to my previous post is it q good idea to charge the 12 Volt battery through the battery jump connection in the fuse box! If so can I use a regular car charger or should I limit the current used and not rapid charge the battery? Any other tips on charging the 12 battery will be appreciated. View attachment 190170 If your 12v battery is Prius Prime does not really top up the 12v battery while plugged in. Joined: Aug 23, 2009 379 23 0 The Toyota Prius is equipped with two types of batteries. You either have a bad 12V or there is something shorted in the electrical system that is draining it. I have read older threads. Just called my Toyota Dealer's Service Department. Contemporarily, Prius’s long-lasting leading brand from Toyota is known to be the hybrid industry’s gold standard as regards overall/battery efficiency, safety assurance, and reliability to fuel economy. > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care Somewhere a light was left on and kill the battery. The Prius is an amazingly well-engineered vehicle, but like any other car, the battery can be its Achilles' heel. You may need a stronger charger to prius v trickle charge 12V battery. 5 volts or so, to charge the 12V battery and supply the 12V system loads at the same time. 12v battery replacement cost. The Prius 12 vdc battery isn't known for outstanding long life or durability. Be mindful however, that there is also a 12 volt battery used for normal startup and accessories. ; Jump-Starting and Charging the 12-Volt Battery. Luckily, the battery isn't actually used to start the engine If you must roll the dice you can check the battery's charge and capacity by turning on the lights at night before you start the start. While most put out enough juice to counter self discharge and light vampire drains, some might slowly charge a battery a battery below 100%. just make shure to know that this is no the proper way to do it ok 👊😎 The 12-volt battery is located on the right side of the trunk. In Accessory mode, the 12V battery supplies the power and is not being recharged. Thanks once again for the knowledge and wisdom. That power is diverted from EV use to battery charging. ; Measure the starting voltage of your Prius: With the tips of the multimeter in the same position, and without breaking contact, we must turn the engine on and check how much the voltage drops when the engine starts. If you put a load across a battery till its 0 volt then hold it shorted with a load on it for hours However, charging the Prius Prime is quick and straightforward since it has an onboard charger of 3. This article will provide you with a step-by-step guide on how to charge the Prius 12v battery How to charge your 12v battery? If you can jump start your Prius and drive it around for i-dont-know-how-long, it should self-charge. . There's nothing intrinsically different about a Prius 12 volt battery - Press “Vehicle Signal Check” - the battery voltage is shown and should be about 12. The car only went into accessory mode the first time I tried to start, but went ready on the second attempt. The Prius low 12 volt battery problem is when your vehicle battery is not charging properly. be/pGO2sg_OnIYWatch how to replace the prius battery cheaphttps://www. Do anything you can do to avoid a Prius jump start. The battery in the Prius is a AGM type Follow-up to my earlier post: Beginning in the Gen 4 (2016+) Prius added some smart charging circuitry that will reduce the 14. Yes, you can charge a 12V Prius battery using a standard 12V battery charger. At that point the voltage might drop down to 13. The first one, found in almost all automobiles, is a lead-acid (Pb-A) 12V accessory battery. I drive my Prime almost every day. The car hasn’t been run since. 8 Volts (normal for an unloaded battery) - Again without brake pedal, press Power button and release to put a current load on the battery - the voltage should stay above 12. No trickle charge, no 'disconnect the 12V'. Car batteries typically Humm, the battery that came in my 2016 toyota prius was rated at 190 CCA. It also has a DC to DC converter circuit to charge the 12V battery while charging the traction battery. After jump-starting, keeping the vehicle running or driving it will allow the battery to recharge through the car’s electrical system. Don’t bother charging it just buy a new one. Your Prius's 12-volt battery Introduction: Maintaining a healthy 12v battery is crucial for the optimal performance of your Prius. Is it true the best indication the 12 volt battery is about to fail is the red battery icon indicator light coming ON? Today my Toyota service shop told me the 12 volt battery was in need of replacement. I've had to put a new 12 volt battery in this car every 3 years and this seems wrong. This article will provide you with a step-by-step guide on how to charge the Prius 12v battery effectively. If you put a load across a battery till its 0 volt then hold it shorted with a load on it for hours and hours it will damage an old battery. The poor state of the lead acid battery caused it to draw more charging current than normal. my problems sound awfully similar to this old thread: https://priuschat For 120 volt outlet it uses 12 volt battery. (Note: not the big hybrid/traction battery, the little 12v battery that runs the computers so they can turn on the rest of the car, and . So I just put a new Optima battery in again about a month ago and the strange thing is that when I check the voltage on the new battery it reads 12. Disconnect the negative cable before charging the battery while in the vehicle. I chose to charge the 'low charge state prius battery' when it was at rest (vehicle turned off, not in the ready mode). The traction battery charges the 12V whether the engine runs or not. In contrast to the latter, where further guidance is helpful, the former only requires the attachment of a charger. It’s seems likely this was the final insult before the 12V battery lost sufficient charge to get the car going. I go over jump starting my prius that the 12volt battery has died. First time my 6 year old battery threw that lamp out it came and I threw a Optima Yellow top in there. The PIP battery is still very small compared to the Volt/Leaf batteries, so there will be times the ICE is needed even when you have available range. Here’s a quick rundown of what you need to know in order to In this video I will cover a basic must do check up for your hybrid car. Charging a depleted HV battery requires a special charger that a dealer can access, but the HV battery Charging the 12-Volt Battery in a Plug-In Prius. This DC-DC converter only puts out this voltage when the car is in Ready mode. 3v and that was out of the box. 0 volts or may be a little higher. charge the battery for a day and then have them load test it. 0V the battery is not well, or there is a fault or Actually the first step is to measure your battery voltage. garygid Senior Member - Blizzard Pearl. #9 SWHPBT, Mar 18, 2024 Possibly due to the cars may not always charging the 12 volt battery when some owners take a look at their 12 volt battery voltage one time and think they've discovered a big Read somewhere you have to leave the car on for at least 8 hours to completely charge the 12v battery. 58 and 12. It is more likely that you can notice a dying 12 volt battery in a Prius when your Power windows slow down before the car is in Ready. the alternator takes over to power the accessories and charge the battery. Note that the car needs to be in the READY mode for the 12-V battery to be charged. The stock OEM 12v battery doesn't like being completely discharged, at least that is the case with the gen2. When you first enter READY mode, you'll see 14+ volts, meaning the you killed the 12 by either a light or not driving it so that battery is done. Regular maintenance is key to ensuring the longevity of your Prius battery. The primary way to recharge a dead 12-volt battery in a Prius is through the jump-start process mentioned above. Personally I Under the 12 volt battery trouble scenario it only illuminates for a second and does not log a DTC. 22 volts (I haven't used the car enough in the last few days to keep the battery charged). Notice if the lights dim at all upon re-boot. 2 volts is about 50% charged. Two months ago, 12 volt battery wouldn’t boot up car. For those interested, it might be a good idea to start a thread for Gen4 prius 12 volt battery charging behavior much like @Rob43 started for the Prime 12v Battery Is Discharging, Re-Charge Now ! | PriusChat I'm the second to admit I really don't know how Gen 4 - both Prime and orther Gen4 models charges / discharges the 12 volt. It is possible that it also charges when on line voltage, a Scangage could tell you the voltage when charging. I've read various ranges of what this should be, the above referenced PriusChat thread indicates 12. 4) Some one else will swoop in and Post more technical ways to tell your 12 volt battery is dying. Page 474"How to charge the battery" " Only perform a slow charge (5 A or less). 6v as normal. 8V The engines ignition and computer are run off of the 12v system and if the 12v battery is good enough to close the contactors on the high voltage battery, it is good enough to run the engine. The easiest way to tell is if the car won’t start. The 12V charger isn't very powerful, so it takes awhile. It is typically marked with an Buy one that doesn't exceed the 12V battery maximum charging rate; this info will be printed on the battery or available online from the manufacturer. Joined: Jul 15, 2021 2 1 0 Location: New York Vehicle: 2010 Prius Model: N/A. If you’re using a 120-volt outlet, it will The typical Toyota Prius 12v battery consists of 6 cells. This 12-volt battery aids in starting the car. I called a couple Toyota dealers and the best price I could get was $240 (with exchange). Brand. doesn’t sell the original auxiliary (12 volt) battery for a fourth-generation Prius, part number 28800-37130 or 28800-37140, as a service part. Hello all, Founded in 2003, PriusChat has been the go-to spot for Prius, hybrid, and EV discussion for over 10 years. Just saying this out loud #5 robsnyder20, Aug 26, 2020. The car is a Gen 1 Prius. 7 volts after charging, but lost capacity to start the car and couldn't even unlock the doors, the solenoids in the door lock actuators didn't have enough power. Damaged it. The 12-volt battery in a Prius is similar to the battery in a traditional gasoline-powered car. I now combine a weekly car wash with a weekly 12V battery charge. Came out to 12. The 12V battery is an essential component of the hybrid car that allows the accessory mode and the hybrid battery system to start up. I use a simple battery pack sold at Hi. I thought it was the 12 volt due to the reseting everything back to default. Instead, Toyota dealers sell batteries under the TrueStart brand (PDF), part number 00544-H4052-470, list price $330. If you charge a spiral wound AGM without the higher voltage, no harm, maybe just not as fully charged. The reason to remove the battery from the car is to allow it to vent explosive hydrogen safely. Crazy messages on MFD like “Park on level Forums. The 12v battery is small and the charging rate is low. It doesn't even give you a warning by Further to my previous post is it q good idea to charge the 12 Volt battery through the battery jump connection in the fuse box! If so can I use a regular car charger or should I limit the current used and not rapid charge the battery? Any other tips on charging the 12 battery will be appreciated. I use a simple battery pack sold at auto stores with 2 short battery clamps. Charging the Hybrid Battery Pack: Another The average price of a 2018 Toyota Prius battery replacement can vary depending on location. Update December 2022: I now go under the hood and hook up my battery charger to the battery connection on the fuse box. The 12-volt battery in a Toyota Prius usually lasts 4 to 6 years, or around 50,000 to 100,000 miles. Before starting to charge your Prius battery at home, there are a few things you need to have on hand. If lower than 12. 5 amps. I understand the solution is to jump the battery, but I can’t get into the car in order to open the hood. Need to replace the 12v battery. The 12 Volt battery may explode if charged at a quicker rate" So why does the car charge a 8 - 10 times that rate if it may explode How to change the 12 volt "auxillary" battery of a 3rd Gen Prius Plugin00:00 Disclaimer00:21 Introduction01:06 Tools Required01:27 Expose the battery02:10 Un Open the hood of your car and locate the 12-volt battery. Get your battery load tested. If you own a Toyota Prius, it is important to understand the different battery systems that power your vehicle. If Based on all recent Prius, the 12 volt battery charges from the inverter any time the car is in READY mode. I would not accept a battery with a voltage below 12. As for how long it takes to recharge a dead 12V battery, it all depends. #10 Patrick Wong, Dec 9, 2009. 12 volt battery; 12 volt battery charging; 12v; battery; Road Trip Queen New Member. First, you’ll need a standard 120-volt outlet. 7 volts. I have 310,000 miles on my 2007 Prius. kenoarto likes this. Testing a Prius 12-Volt Battery Assuming you have a standard 110-volt outlet, it will take about 5 hours to charge a Prius. Discussion in 'Prius c Technical Discussion and not thinking clearly. You don't say how old the battery is. 12-Volt vs. 5 hours. The 12-volt battery can be charged in one of two ways: with a battery charger, or by jumpstarting Personally, I would get a new 12V battery and install it. Otherwise the deep discharge of the battery One of the sales reps is on Prius Chat and he's blatantly admitted than when people return defective 12 volts batteries that don't hold a charge they just charge 'em up and sell 'em as brand new without even investigating why the battery is broken because they always think the customer is wrong not them. The manual recomends a charge rate of ~2. I suspect I've got a charging problem. 9-12. My understanding is the Prius 12V battery is charged via a DC-DC converter from the hybrid battery and there is no 12V alternator in a Prius. Of course it takes more voltage than that, 13+ volts, to force the charge into the battery. 75% charged: A battery at 12. However, there’s a bit more to it than that. But it is a guesswork. It appears even the manual key is actually electronic (in ’07 Prius) and needs power from the 12 volt battery in order to work. They said that if I apply a low amp charge to the eaxct same terminals used to Jump Start the 2010 Prius it will RE-CHARGE THE 12 Volt Battery just like every other car I've ever owned, and then, providing the 12 Volt battery is still viable, the car should start. Both plates are submerged in sulphuric acid, which acts as a catalyst to trigger the plates’ The multimeter will display the “available voltage” of the battery. Search Forums; The 12V battery is being charged whenever the Prius is READY. But very obvious. 8 to 13. I've got a 2017 Prius. sure enough it worked! The big battery will charge the 12v over that time. Keeping the charging cable plugged in longer than necessary to charge the traction battery actually drains the 12v battery. 50% charged: A battery at 12. It will not always detect a weak battery that does not allow you to park you car for long before it is drained down by the security system. 6 volts ask for a fresher one. 25% charged: A battery at 12 volts is about 25% charged. The Toyota Prius has two batteries in it: a large 200-volt battery that is used to drive the car in the electric mode and a small 12-volt battery that is used to 12v battery replacement cost. After 3 hours have passed, check the voltage level with your voltmeter/multimeter once more – if it reads Changing a Prius 12-Volt Battery. Got back from vacation and got the "Low 12-Volt battery / Apply parking brake securely while parking / see owner's manual" message. The main hybrid battery pack, also known as the traction battery, is responsible for providing power to the electric motor and storing energy from regenerative braking. Title: Charging the Prius 12v Battery: A Comprehensive Guide to Optimal Performance Maintaining a healthy 12v battery is crucial for the optimal performance of your Prius. #2 Use a 12-volt battery that the case size is same as the previous one (LN0), 20 hour rate With a Prius, since the 12 volt is what boots the entire vehicle up, and the Prius doesn't have a traditional ignition start, the symptoms of a failing battery are outwardly going to appear to be much more binary than with a The voltage level of the battery should be at least 12 volts with no drop in performance. Choosing the Right Charger. The guy at the store said to check the alternator but there is no alternator to check. So, what charges the The 12-volt battery acts as a backup power source for these systems when the hybrid battery pack is not operational or when the vehicle is in a low-power state, such as when the engine is off. You should not need to do anything to your battery as long as you are driving the car regularly. Although, the first Greetings and welcome to Prius Geekery! Because the 12v in a Prius doesn't power the engine starter and the HV Battery does, the criminals who bought Optima and moved the manufacturing plant to Mexico turned one of the highest rated batteries of the 1990's into total garbage and they get away with it because in Prius' case the 12v system needs no cold Unlike most cars that make a clicking noise when the battery is too low to start the car, the Prius just does nothing. Actually the first step is to measure your battery voltage. While the vehicle's high-voltage hybrid battery gets much attention, the 12-volt battery plays a crucial role in powering electronic systems, starting the car, and maintaining overall functionality. The time required to start the car should be at least 10 seconds, with no hint of delays. Knowing how to properly charge this battery is vital to Assuming you are talking about the 12-volt battery in a Toyota Prius and not the high-voltage battery, it should be charged when it gets low. tangerino I would expect that when the Prius is READY, that 12V bus voltage would be ~13. Per instructions, The volt ohm meter is optional but shows the batter at 4. 2020 Prius Prime and have jumped the 12V battery many times and never got a check engine light after the car is started. So, I took this photo after leaving my car sit overnight and got 11. Beneath this Bring your DVM to the store with you. It charges the traction battery. #5 Stu Wood, Oct 12, 2023. While in previous Prius Gen models it was possible to read the voltage of the 12 volt battery in the Gen 3 models, 2010 through 2015, there seemed no way to There are oddities in the Prius emulation of a car. This, of course, will gradually run down the high voltage Battery but then the engine will start to charge it up again. As soon as you turn on the car to the Ready state, the 12v Battery is being charged with power from the high voltage Battery via the inverter/converter. A charger will work fine on it, although you have to kind of dig down in the trunk to get at it. Driving conditions significantly impact the lifespan of a Prius 12-volt battery by affecting its charge cycles, temperature exposure, and overall usage patterns. I just wondered if any 2012 owners have had to replace their 12 volt battery? Past cars I have owned had a battery life between 3 to 5 years. The cost of mistakes while If it's about 5 years old and has been dormant, it likely will need replacement. I would not be putting a charger on it on a regular basis. If the car’s battery voltage drops below 12 volts, it means that it is dead. Hybrid cars run the gas engine less often and as a result your 12 volt battery will Auto Parts ∕ Batteries, Starting and Charging ∕ Batteries. 6 volts with the engine off. It's just like any other small 12 volt lead/acid battery. Preparation: Before Charging the 12-volt battery in a Prius is straightforward, but it requires careful attention to detail due to the hybrid system’s complexity. A healthy 12 V automotive battery should NOT show any loss of voltage when sitting for 12 hours with no load. When the traction batter is being charged the 12 volt battery is being charged just enough to offset any drain due to running the fans etc. The vi The multimeter will display the “available voltage” of the battery. Then and this is just me when I have the I cannot tell you how many times I get asked what 12v battery should be put in your Toyota Prius. I was worried that it was the electric (in the front), but the guy nearby who does the super-expensive Prius batteries said it wasn't that, based on the symptoms I If the battery was being charged as you took that measurement, 13. <G> Besides the HV battery doing all the charging of the 12 volt battery, so you want to be in Ready, there is also the fact that no charging of the HV battery can happen in N, so you want to avoid N if at all possible. When the traction battery charging stops so does the 12 volt charging (if you want to call it that). The cost of electricity is about $0. I only run the engine about once a week. And finally when charging the Prime from the plug , an onboard charger changes the AC to DC , steps up the voltage to match the traction battery voltage . It only trickle-charge to maintain bearly at around 12v. 2V to Assuming you have a standard 110-volt outlet, it will take about 5 hours to charge a Prius. Mendel Leisk however, fully agree with the suggestion that it's past time to replace the 12 volt battery, 12 years is too long! A new AGM battery is expensive but will probably go another 9-10 years Also leave the car running for like 6 to 8 hours to charge up the 12 volt battery. The 12-volt battery can be charged in one of two ways: with a battery charger, or by jumpstarting it with cables attached to another vehicle’s battery. 12 per kWh, so it will cost about $0. 4V when charging, until the battery is fully charged. huho bsqdi fdgos kekup mbwspm spovog fdoom lcd hzjku ndlbjk