prius gen 2 battery voltage

Its a 95 degree day but the fan is running constantly. THE ENGINE (ICE) MUST BE OFF! Look here. Ive seen quite a few pretty poorly done resealing jobs. There are about 7 divisions between the MIN and the MAX and each division is .5 volts. Although deceptively small, the main power switch is a 50-amp circuit breaker. Were in Berkeley, so we have a lot of Gen1s still coming in and were still seeing at least one bad battery per month. Operating into a dead short, it only generates 20W of waste heat. I reassembled everything this morning and only after a few minutes the warning lights came on. The Toyota test specifies a maximum difference of 1.2V. They wont let you see the vehicle that it came out of and they will not give you a written guarantee that the battery will work (all electronics sales are final, look for it, its normally a sign on the wall behind the counter). At first most of the batteries were covered under warranty, but it has been 12 years since the last 2003 was sold, so none are covered anymore. Now lets take a look at a recording taken on the same car, with a brand new battery. Purchase the OEM battery through your dealership's service/parts department and install it yourself. It can still be used to power accessory devices like cell phone chargers and the radio when the car isn't running or in "Ready" mode. 12) Disconnect the charging cables and, after a minute or so, short them together for safety. The most common visual indication that your hybrid battery has failed is the notorious red triangle on your cars dash. If the fan ever becomes plugged with lint, etc., use a gentle air stream to clear it. The graph setup is exactly the same, and the test was done in the same way. Figure 2. What Is A Battery Cell? Dim interior and exterior lights before starting that then brighten after putting the Prius in "Ready" mode. A traction battery is a proper term for a hybrid battery. "Insurance is only $8 a month?!" Ultimately what has caused or will cause your battery to stop working will be one failed cell in 1 of the 28 modules in the pack. Do you need a license? I dont know whether the fault lies with skill or flat-rate time pressure. Contact us. Read more of Peter's stories at Toyota news coverage on Torque News. Toyota RAV4 Full Review and Common Problems Update, The 2023 Jeep Grand Cherokee Includes Major Upgrades for Music Lovers, 2023 Subaru Model Guide Fuel Economy - The Best And The Worst, The 2027 Subaru Crosstrek Wilderness EV? Your interest, opinions and questions. So, for hybrid customers who want to know, It the battery in good shape?, I suggest the following. This heavy loading on the weakest modules is what eventually gets them to where they have almost no cycling range left in them. What are the symptoms of a failed hybrid battery? Keep the device in a well-ventilated space. It is important to follow this sequence. You may hear your gas engine (ICE) revving higher than normal. 3E93EC41-5D49-4435-98DF-06A5B85606F6.jpeg, (You must log in or sign up to post here. The voltage of the battery is displayed in the top left of the screen (red circle). MFD screen on. Well I got back in there over the weekend, I clearly didnt tighten the bolts on the buss bars enough and they were all pretty loose so I torqued them to spec. Once the MFD has booted up, press the "Display" button (red arrow) once. If you can find a shop to install your maybe good battery it will cost you another $300 and they will not guarantee it because it wasnt their battery. Here is how it works, one NiMH (nickel-metal hydride) cell has a voltage of 1.2 Volts. The charge rate is deliberately low so that there is little chance of overheating the battery. Press these indicated spots (green arrows) six times in the order indicated on the arrows (i.e. A tested snubber circuit prevents sudden spikes in the reverse direction. There are quite a few differences. You are trying to discharge and recharge the battery pack while observing the voltages. Tested the voltage on the 12v battery. One way to diagnose problems with refrigerant levels in a car's AC system is to hook up gauges to the high and low lines, measure the pressure, and note the temperature. (If you're in a hurry, watch the short video below on how to check the voltage of your battery using the hidden service menu!). We highly recommend that if you do choose to replace your battery on your own that you invest in a repair guide, research everything before you do it, and follow all of the safety precautions while working with your hybrid battery. It also charges Camry, Ford Escape, Toyota Highlander, Lexus Rx400h, as well as Prius! The only way you will come in contact with high voltage generated by the unit after power is turned off is if the HVDC switch is left on, the charging cables are not shorted together, and that only for sixty seconds. There are some regular maintenance items (cleaning the battery cooling fan) that you can and should perform to prolong the life of your battery. Also, experience shows that some batteries which have not held a charge for a long time will have much lower capacity than normal, and reach 200 or 300V in seconds. Failing modules will hit very high and very low voltages because they are low on capacity. New 2023 Toyota Sequoia Details Announced: How to Get TRD Off-Road and TRD Sport. Americans designed some superb sports cars in the 1950's and 1960's. What cars to buy, where to buy them. If you have no braking issues, these indicators generally indicate that the battery is weak, and the low voltage is affecting the computers that control your ABS and VSC. These are questions that have concerned many of our customers who were either considering buying a hybrid, or had already purchased a hybrid. If it increases rapidly when charging, the battery may have a fault which results in an internal resistance much larger than the usual 0.55 ohms, which usually would give at most a 1.5 volt change when charging begins. The sensing circuits will come to life, the green "power on" light will go on, the digital voltmeter will. Hybrid cars like to be driven regularly! The brand new battery had a maximum difference of about 0.16V, the battery had a maximum difference of about 3.5V, the good used battery (as you can see below) had a maximum difference of 0.28V. Here's a look at the Cheetah, Chaparral, Shelby Cobra, Corvette Stingray, Shelby Mustang, Cobra Daytona, Devin SS, Griffith, Scarab, Sunbeam Tiger, Early Thunderbird, Arnolt-Bristol, Bocar, Dual-Ghia, Edwards America, Cunningham. Relative to the Model 100 [August 2012], the Model 160 features these improvements: 1) 70% less internal heat generated, so better electrical efficiency. Those cells linked together give each module the 7.2v. Most people do not know the actual name of a battery, and a little helpful information is always nice. When using Dr. Prius, it will read the voltage to you in block form (even though Dr. Prius calls them blades). Again, note the voltage. How can you tell when a Prius battery is beginning to fail? For example, for 200 volts, use a setting of 4.55. The cooling fan may run on high to ensure that the battery gets maximum cooling while it is this malfunctioning state. The best time to test the 12-volt battery in your Prius is after it has been sitting for several hours or overnight. What happens behind the scenes will shock you. This all goes back to not letting batteries sit, when a car is wrecked it can be several months before the battery is put up for sale, (wrecker service, insurance companies, vehicle auctions, salvage yard, disassembly, inventorying, advertising) all of this takes a long time. Yes I cleaned the hv battery fan really well. I've included pictures to assist you with this procedure. 1. If you look at the picture below, a battery cell is the smallest part of the battery. How to check them out. We welcome: $500 for a battery that will last 6 months? Regardless of the answer, I think 1.2V is a good good/bad cut point for battery pack testing. This indicates my battery probably needs replacing soon. Learn how to change a front wheel bearing with a step-by-step guide with photos and a video. Charging may stop and start cyclically. I know some people have had success with doing that, but I can tell you that success is fleeting and never lasts long. Also notice how long the discharge cycle lasted. Return it for repair within warranty. Batteries (or anything that conduct or store electricity) do not like to get hot. 3) The "HVDC" switch merely controls the logic circuits that switch on the high voltage, rather then the high voltage itself, so the switch contacts should last forever. When a battery in Prius begins to fail, these cell(s) are typically the culprit. At the present time, the consequence in most Prius shops is installing a new HV battery, because most shops dont have an appropriate battery charger. Find a used low mileage battery at a salvage yard and install it yourself or have it installed at a repair shop. After more data logging and testing the overall health of my battery is around the 25% mark. This carcame in for a 5K service and theowner had no problems to report. All batteries depend on chemical reactions to work properly. About 45 min for removal and an hour for putting it back in. Any other code that starts with PA0 is most likely pointing to a bad battery. A battery block is, you guessed it, two modules linked together. Stop charge voltage vs. DVM reading. For the voltage under load (when your Prius is in "Accessory" mode), anything below 12.0 volts is unacceptable, At the time of testing, when these photos were taken, I had just finished a long drive in my Prius so the battery should have been at a higher voltage than what I found above. You need to use this graph to use the charger properly. If internal resistance is much larger, there will be a larger change. (This is where the rapid charging and discharging symptom comes from, its not really the whole battery thats fully charging and discharging its just the weakest modules). 4.The only way the attached battery could discharge is through 2kV of diode rating, 800V of SCR rating and an 800V capacitor. But as soon as the ICE shuts off and the battery is loaded with the throttle & MG2, the voltages make a major split! Never turn the device on without the charging leads being connected to something. Loss of radio presets when turning on your Prius. That may seem like a lot, but its a drop in the bucket when compared with other types of expensive repairs. The Gen2 Prius batteries are performing much better than the Gen1. Figure 4 shows a graphical representation of a batteries typical module capacity when we first test it. You need to know here that when your battery begins to fail or has already failed, modules are what you will need to find and replace. Slowly turn the "Set Chg" knob further until the desired final voltage is set (using Figure 2). If the fan ever becomes plugged with lint, etc., use a gentle air stream to clear it. (this is when it can be dangerous!). As a Prius owner, I have learned a lot about how to troubleshoot any issues that might arise. I spell out the parts and have labeled them, so there is no confusion. 10) When the set charge is reached, the green charge complete light will come on again, the alarm will sound. We have sourced many batteries from salvage yards and only about 20% of them would have actually worked if they had been installed. Thats the last thing you want when you are trying to discharge the battery. For them, I have devised a method for testing battery condition. Although damage will not always occur when it is not followed, proper operation may be compromised. This gets you a new battery installed and normally only includes a 12 month warranty. Anyone need a clean parts car in the Boston area? There are advantages to having assembly done in a factory setting by a guy or gal that does nothing but assemble batteries all day long. Oxygen sensors behind the converter can be tricked. Even if all these break down, 480V, 12A fuses and a 50A thermal breaker are in series with the battery lead. Our charger provides an automatic limit on the charge voltage that can be attained, guarding against battery fires if the device is left unattended. top first, then bottom, then top, and so on). 2 shows the measured relationship. You should read the codes, you probably have another problem, not the battery. This is the capacity imbalance that will result in the eventual failure of a hybrid battery pack. The fully charged voltage is just over 16V and drops to just under 15V. The V, 4) Turn on the HVDC switch. If the fan stops, do not use the device. The level of concern about battery packs is massively disproportionate to the actual rate of failure. We use a half-wave configuration to insure SCR recovery 60 times a second. Note: 6.5Ah is the amount of power that the module could hold when it was new. This is a highly dangerous thing to do! This is normal, and indicates the voltage on the battery exceeds what you have set with the knob. ), Installing a Nexcell Lithium Hybrid Battery, Need help diagnosing Hybrid battery issue, Hybrid battery is dying, unsure which way to go. To keep it in top condition, you want to know all the steps involved int cleaning a car and keeping it clean. You may be able to buy more time on your current battery by using a top off or float charger designed for 12-volt lead-acid batteries. 2) Plug the device in to 120VAC 60Hz single phase power. Well, thats not entirely true. Error message displaying on the multi-function display (MFD) that states, "There is a problem with the transmission "p" lock mechanism. The HV ECU monitors battery condition, and will alert you that the battery performance has degraded below an acceptable performance threshold with a warning light. Keep the device in a well-ventilated space. Cells, cells, and more cells are what people continually say when discussing Toyota Prius batteries. How much will a Prius battery cost to replace? You'd be surprised what you find out. Remember the two voltages we found previously? The method of access below will work on any 20042009 Toyota Prius. ICE off = throttle on. A good recommendation would be that if any of the warnings above dont make complete sense to you, then you probably dont have the proper amount of electrical knowledge to safely work with your battery. So if you remember a module is six 1.2V cells for a total of 7.2 Volts. What IS the maximum acceptable inverter temp?? (Like bathtub cheese, or bathtub gin, bathtub science is home-made, by people without professional training, and may be of dubious quality.). This Is What It Could Look Like. Contact us. If you need a replacement battery, you have a couple of options: Are you looking for other hands-on, do-it-yourself type things you can handle that don't require expensive tools or taking your Prius to the dealership? The Prius is an amazingly well-engineered vehicle, but like any other car, the battery can be its Achilles' heel. As hard as the engineers tried to design this system to provide even cooling to the entire battery, it just didnt happen. This Trim Level 2022 Toyota RAV4 Hybrid Is Receiving the Most Love from Owners, This One Thing Will Stop a Lot of People from Buying A 2023 Toyota Sequoia, What 2022 Toyota RAV4 Prime Owners Think About Toyotas Connected Services. 2. If you use the default settings, you end up with a pretty useless graph. There is an internal resistor which automatically discharges the capacitors in the unit after the power is turned off. What Is A Traction Battery? It also charges Camry, Ford Escape, Toyota Highlander, Lexus Rx400h, as well as Prius! In an emergency, the main power switch is your safety switch. Input and output are protected with 12-A slow blow fuses. For a Prius, if the nominal charge voltage is 202V, the operating range is 100 to 235V during the normal charge/discharge cycle in operation in the car, so 200V is a great place to stop. Also, watch Toyota suddenly bringing its BZ4X electric SUV concept to United States on Torque News Youtube channel and please subscribe us on Youtube and follow on Twitter for daily Toyota and EV news reports. Luckily, the battery isn't actually used to start the engine like in a traditional vehicle (using a starter motor that we can hear cranking an engine to life). They most likely wont be honest about the year or the mileage of the vehicle that the battery came out of. When a battery module has reduced capacity, the voltage will spike heavily, causing an imbalance in the entire pack. Driving a truck is a respectable career move, but you've got to have a nickname. Your Prius has a Nickel Metal Hydride battery in it. This article is accurate and true to the best of the authors knowledge. Finally, take a look the amplitude the MAX reaches 18V and the MIN drops down to 14.5V. The cost for this repair is $850 which includes all taxes and fees and same day mobile installation at your location. The picture below is a recording on the Toyota Techstream scanner. Whichever block has the lowest voltage is reported in a PID (Parameter ID) called Battery Min Block Voltage. (Faster then I anticipated) As Im waiting for my scanner tool to come in from amazon, I did a little more digging. Taken together, these features guarantee the device is utterly safe against a battery reverse discharge through the unit itself. If you heat or cool a battery too far outside of its designed temperature band the chemical reactions slow down. 11) Turn off the HVDC and main power switches. Pressing "Menu" will take you to the "Diagnosis Menu". 11) Turn off the HVDC and main power switches. The success of this fix depended a lot on the technicians skill and the effort he put into the job. Electric Vehicles You Can Buy With a Spare Tire - Yes They Exist, Tesla Supplier CATL Has a New Type of Battery In Production, Coming in 2023, Tesla Says 4680 Battery Is Progressing, But Not Yet Important for 2022. This also results in low power, poor acceleration, and bad gas mileage. Peter can be reached on Linkedin and you can tweet him at The_hybrid_guy on Twitter. You shouldnt worry about a week or two but if you regularly leave your car sitting for a month or more it will most likely affect the life of the battery. I have graphed the Min Block Voltage and the Max Block Voltage using an overlapping graph. a trouble code will be set to replace the battery pack. All components in the high voltage circuit are rated for 800 volts or higher; the main rectifier is rated at 2000 volts, 35A. Its the same one that comes on if you open your door with the car in drive. Expect to pay somewhere between $900 and $1600 for a used battery from one of these places. The Gen1 batteries had a lot of problems with electrolyte leaking past the terminals. Are there any other ways to check a faulty inverter pump? The car is 7 years old, just like the other two Priuses that had bad batteries, but the mileage is considerably lower; this car has 58,000 miles on the odometer. How Do You Take the Luggage Bars Off Your 2022 Toyota RAV4 Hybrid? In this article, I want to look at the three parts of a battery and discuss names and functions. "Do you need a motorcycle license?" Alternatively, you can just power off your Prius. Discussion in 'Gen 2 Prius Technical Discussion' started by 541pughe, Jun 30, 2018. If one block in the pack is doing something wildly different than the others, somethings not right. This failure to hold a charge is normally followed by rapid charging and discharging on the energy monitor while driving. Back To MSRP? Charging cables are rated 10-A, 1,000V. Are Owners Really Going to Tow Anything with the 2023 Toyota Sequoia? Its OK to have them shorted together, although theres no point in leaving the power on when they are shorted. What's Wrong With The 2022 Toyota Tundra's YouTube Volume Adjustment? At the present time, the consequence in most Prius shops is installing a new HV battery, because most shops dont have an appropriate battery charger. So, like the bad battery and the new battery, the greatest difference between the Min Block Voltage and the Max Block Voltage is at the end of the discharge cycle. So lets take a look at a known good battery pack thats been in service for a while. So when you add them up (1.2V x 6) you get a 7.2 Volt 6.5 Ah (Amp-Hour) module. So you paid $1200 for a battery with a lot of unknowns and no guarantee. It is possible to cheat an emissions test to conceal catalytic converter faults. Oddly, the Prius with the bad batterys MWL light had just come on, which begs the question As far as selfdiagnosisand the trouble code P3006 are concerned, doesthe MWL really come on when there is a difference of 1.2V between the Min Block Voltage and the Max Block voltage? The air then flows thru the designed spaces between the modules and then out of the bottom of the battery case thru another piece of ducting that carries the heat out of the car. Thats a 3.5 volt difference. This recording is from a 2001 Prius, same as the other two recordings. must replace a module in regards to repair. The test goes like this Start the car and allow it to warm up. For the Prius, there are two situations for which this device is designed: 1) A Prius Hybrid has been left idle for a period so long that the main battery has discharged to a level that will no longer start the engine, 2) A Prius Hybrid was driven on the battery after fuel is depleted, to the same result. However, it is essential to understand that replacing individual cells is impossible. See Figure 3. 3) Turn the "Vset" knob counterclockwise to the stop. are preventing you from moving. The Prius battery consists of a bunch of individual battery blocks wired in series. Efficiency: This device is 90% efficient. So far, weve seen many Insight and Gen1 Civic batteries fail. The Prius' battery lives here, hidden under a panel in the rear, passenger-side corner of the hatch. Send them to crphipps@aol.com, For a 10-amp, 220VAC input battery charger, click, For our entire line of high voltage hybrid battery chargers, click. If the voltage spike is large enough, a trouble code will be set to replace the battery pack. But it seems that is not good enough for folks who are in the market for a used hybrid. That is all for today, and remember, Today's Adventure is Tomorrow's Story. Are The Toyota RAV4 Hybrid Dealer Markups Slowly Dying? When the ICE is running, the battery is charging. (the reason for this behavior is discussed later, see Why did my battery fail?). 4) Turn on the HVDC switch. Ive seen Gen2s with 200K on the original battery. When I became curious about the health of my Prius' battery and wanted to get it checked out, I drove down to my trusted local AutoZone store, having had batteries in my previous vehicle tested there in years prior. Cells are part of a larger part called the battery module, which I will cover next. Check out this wild new battery tech that Tesla has and why it will forever change the auto industry. Your car is a huge investment. These batteries naturally self-discharge and there isnt anything that can be done stop it. Keep the device away from water, humidity and steam. Of course, remember to reset your "maintenance required" indicator when you're done. For the resting voltage, generally, anything around 12.4 volts and above is considered acceptable. This is more than enough to be deadly if you dont know how to handle it. That means you will be good out to 250K-300K miles depending on how many miles your car had when you got your new battery. If I had to guess, it's probably a failed inverter pump. If you take your car to a local auto parts store (like AutoZone or OReilly Auto Parts) they can read the trouble code or codes that are causing the check engine light to come on. Fig. 12.3v resting 13.93v ignition on. Let the sounds of a bad starter help you diagnose and repair your hard-to-start or no-start problem with your car. For more information about pricing, visit our pricing list page. A personal guide to the challenge of turning your dreamowning a Porsche 997into a reality. There are a lot of variables that affect how long your original battery should last but from the research and repairs that we have performed this is what we have learned. Japanese automotive specialists since 1980. What torque did you use upon reconnecting. Its contacts will tolerate the transient voltage. With that being said, you should never block the intake to your batteries cooling fan. Despite the Gen1s battery issues, it has been rare to see one fail sooner than 100,000 miles this is pretty good in my opinion, especially when you consider that the Prius is the first hybrid that sold at such a high volume. Easy, you look at the identical battery blocks right next to it, which are performing under the exact same conditions. Is it safe for me to work on or replace my hybrid battery myself? Want to know about the 5th Generation Prius? If your battery is failing, you can say that cells are dying, but you must replace a module in regards to repair. Is jump starting bad for your car? Figure 2 shows a top view of a Prius battery with the safety cover removed. Instead, the battery in a Toyota Prius is used to boot up the electronics that manage the engine and hybrid components and activate a relay to connect the high-voltage battery pack to the electrical system. The 14.4v block is one step above the module. Any poor power or mpg performance with greater than 150,000 miles on your car should be considered a warning that your battery is not performing properly. What's fastest? Salvage yards know how much it costs to have a battery replaced so they get a premium for their used batteries. Car flipping tips from an experienced successful flipper. Each battery block is about 15V. 3. This way, you can check the resting voltage of the battery. Watch for drastically spiking voltages, and you will find your weak links. Find his page on Facebook at Certified Auto Consulting. Safety: Other chargers use transformers (heavy and hot) or high frequency IGBTs [Insulated gate, bipolar transistors]. Please take note of this change. I used my racket till the bolts were tight and then a tad bit more, no specific torque. Its the same as the Min Block PID, except it reports the block that has the highest voltage. Either the criteria for setting a P3006 is actually much more lax than the 1.2V spec, OR, the battery pack suddenly deteriorated rapidly, going from a 1.2V difference to a 3.5V difference in only one day, OR, the voltage difference between Min Block Voltage and Max Block Voltage is less pronounced in daily driving than when power braking in the bay. On reaching set level +/- 1V or reverse battery connection. The object of the test is to discharge the battery and observe the difference between the Min Block V and the Max Block V as the battery is stressed. Thats about 2.5 times the capacity of the bad battery. To place an order for the charger, first contact us at 505-466-3877 or the email address below. So how can you tell if a battery block is performing adequately given its current situation? Battery block performance can be affected by temperature and Im sure other variables as well. I still agree with most of what I said way back when, but it youre just wondering how long a hybrid battery lasts, and arent interested in the technical details, click the link for a newer, less-technical article. For the Prius, there are two situations for which this device is designed: 1) A Prius Hybrid has been left idle for a period so long that the main battery has discharged to a level that will no longer start the engine, 2) A Prius Hybrid was driven on the battery after fuel is depleted, to the same result. Now you are charging the battery, and the red DVM will show the battery voltage. Simply replacing them without a rebalancing effort is wasted money. 2) Bright red 0-500VDC digital voltmeter with large characters and 1% accuracy reading the battery charge voltage, rather than a harder-to-read analog voltmeter. If clients do hire us for installation, we encourage them to be present when we install their replacement battery so that we can show them how to safely do this. Once that happens all it takes is parking the car over night with a low charge on the battery and the lowest cell in one of the weak modules will self-discharge enough in a short amount of time and cause what is called polarity reversal. I just found a nice way to graph it on the Techstream, and took some sample data on a few cars with known battery conditions one with a new battery, one with a bad battery, and one with a 60K / 7 year old battery that had no problems. Never connect a battery in reverse polarity to the charger. Typically when batteries begin to fail, a combination of two modules or one block.

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