“Second Prius battery replacement, first Prius lasted a full 439,000 miles in the original and the replacement, second Prius original battery replaced at 224,000 miles and expecting at least another 200K on this one. Both replacements are Greentec, make them your first call, they are very nice, batteries are great and you save a ton vs. the manufacturer.”
Paul Boender
Aug 21, 2025
“Mike was awesome to deal with from start to finish. It’s incredibly refreshing to have such amazing customer service and attention to detail. You could tell that he did everything he could to help me and it was a great experience. I will be going back there again! My 2011 Prius battery replacement went very smooth! “
Sheldon Sutherland
Feb 17, 2022
“Had a great experience with Gus, who helped me replace my Prius battery in a professional and efficient way. He handled the work quickly and answered all my questions with patience and kindness, and did a detailed diagnostic before replacing the battery. I called many shops in town to compare, and Greentec is definitely the best out of all of them. I highly recommend this place if you have any EV or hybrid car problems.”
Wuyang Yang
Sep 5, 2025
Why pay more at the dealership? At Greentec Auto, we offer affordable, accessible and reliable hybrid battery replacements at up to 50% less than dealership prices without compromising on quality. Get the best value with expert service, mobile installation, and a warranty you can trust.
The cost of shipping to you is included with your purchase. This offer is good for the entire continental United States. Add $200 for shipping to a residential address. Let Greentec Auto make it simple to return your core to us, ask about our reduced return shipping rates.
A refundable “core deposit” of $500.00 will be added to your order at checkout. Once we receive your old battery, we will refund the core deposit back to you minus the cost of return shipping. Cores must be returned within 45 days of purchase. This applies to shipping orders only. In all other circumstances, the core will be picked up at the time of service, no deposit required.
Once your new hybrid battery has arrived, put the core battery back into the same packaging your battery arrived in. As soon as we receive your core battery, we will refund the core deposit back to you. It’s that easy.
A hybrid battery replacement for a 2004–2009 Toyota Prius costs $999 to $2,099 at Greentec Auto, installed. Where you land in that range depends on which of three pack options you choose remanufactured, high-capacity cells, or brand new cells each with progressively longer warranty coverage. One battery fits every second-generation Prius model year, and every option includes a diagnostic, mobile installation, and free recycling of your old pack.
| Battery Option | Warranty (Unlimited Mileage) | Rating | Was | Price |
| Remanufactured | 12 months | ★ 4.84 / 5 | $1,599 | $999 |
| High-capacity cells | 24 months | ★ 4.92 / 5 | $1,999 | $1,399 |
| Brand new cells | 48 months | ★ 4.82 / 5 | $2,599 | $2,099 |
Pricing active at time of publication and subject to change.
One pack fits every second-generation Toyota Prius sold in the United States:
If your Prius is a 2003 or earlier it is a first generation car and takes a different pack. A 2010 or later is third generation, also a different pack. The Prius C, Prius V and Prius Prime are separate vehicles with their own batteries.
“Gen 2” is what owners and technicians call the second-generation Toyota Prius, built from 2004 to 2009 and known internally as the XW20. It is the car that made the Prius a household name the first Prius most people picture, and by a wide margin the most numerous hybrid on the road today.
If you have been told you need a “Gen 2 Prius battery,” this is the page.
No. Your Toyota Prius has two separate batteries, and confusing them is the most common mistake owners make:
A dead 12V battery leaves the car unresponsive. A failing hybrid battery leaves the car drivable but slow, thirsty, and eventually warning-lit. If your Prius won’t wake up at all, check the 12V first.
Behind the rear seat, ahead of the trunk, in a sealed enclosure. It is air-cooled by a fan drawing cabin air through an intake vent on the passenger side a detail that matters more on this car than almost any other hybrid, for reasons below.
A 201.6-volt nickel-metal hydride pack built from 28 modules. NiMH degrades gradually rather than failing suddenly, which is why a weakening Gen 2 Prius battery announces itself through falling fuel economy months before the car sets a warning light.
A second-generation Toyota Prius battery typically lasts 10 to 15 years or 150,000 to 200,000 miles and many have gone considerably further. Taxi and rideshare fleets running these cars routinely passed 300,000 miles on original packs.
That durability is why 2004–2009 Prius owners are only now facing replacement. A pack failing at this age is one at the end of a long life, not a car that was poorly built.
Age, more than mileage. Every 2004–2009 Prius is now sixteen to twenty-two years old, and nickel-metal hydride cells degrade calendar-wise whether the car is driven or not. A garage kept 90,000-mile 2006 Prius is on the same twenty-year-old pack as a 250,000-mile one.
Six signs, in roughly the order they appear:
Fuel economy is the earliest and most reliable indicator, typically dropping two to four months before any light. If your mileage fell and nothing else explains it, get the pack tested.
It is what owners call the red triangle warning light with an exclamation point the symbol the Gen 2 Prius shows when the hybrid system detects a serious fault. It usually appears alongside a Check Hybrid System message.
On a car this age it most often means the hybrid battery, but the same light can be triggered by the inverter, the cooling system, the battery ECU or a sensor. The light tells you there is a problem, not which part. The car may enter a reduced-power limp mode or refuse to start.
P0A80 means “Replace Hybrid Battery Pack.” The battery ECU sets it when it detects modules operating outside acceptable voltage range. Unlike a sensor fault, P0A80 will not clear on its own and confirms the pack itself rather than a peripheral component.
If you have been quoted a battery on the basis of a P0A80, that quote is well founded but still worth verifying, because the code confirms module failure and not always the extent of it.
Short distances, yes but not for long. A failing pack forces the engine and inverter to compensate, and inverter replacement costs considerably more than a battery. Once the red triangle is lit, a Gen 2 Prius can refuse to start without warning, often in a parking lot rather than a driveway.
Because a hybrid warning does not automatically mean a dead pack. On a Gen 2 Prius the same symptoms can come from a weak 12V battery, a blocked or seized battery cooling fan, a temperature sensor, or the battery ECU and every one of those costs a fraction of a replacement.
We would rather tell you that you do not need a battery than sell you one you do not need. Anyone quoting you a pack over the phone, without testing the car, is guessing with your money.
The dominant cause is heat from a blocked battery cooling fan and on the second-generation Prius this is the single most documented maintenance issue on the car.
The pack breathes through an intake vent low on the passenger side, behind the rear seat. Over two decades that vent and the fan behind it fill with dust, carpet fibers, pet hair and debris. A blocked intake means the pack runs hot, and heat kills nickel-metal hydride modules faster than mileage ever will.
A clogged fan will destroy a brand-new pack just as quickly. Every Greentec installation includes cleaning the fan and duct a step that gets skipped elsewhere and is a leading reason replacement packs fail early.
Vacuum the intake grille at least once a year, and twice if you carry pets or regularly load the rear seats. Do not block the vent with cargo, a cargo liner, or anything stored against the passenger side rear panel. It takes five minutes and it is the highest-value maintenance you can do on this car.
Significantly. Sustained heat is the enemy of NiMH cells. Gen 2 Prius packs in Arizona, Texas, Nevada and Florida generally show more capacity loss at the same mileage than identical cars in temperate regions. Cold reduces available power temporarily but causes no lasting harm.
Yes. Modules self-discharge at slightly different rates, and a car parked for months lets them drift out of balance. A second car or a seasonal Prius often ages its pack faster than a higher-mileage daily driver.
Most suppliers offer two choices. We offer three, and the middle one is the option most Gen 2 owners end up wanting.
It comes down to how long you plan to keep the car.
All three carry unlimited mileage warranties. None of them penalise you for driving the car.
Because more amp-hours means the pack does the same work at lower stress. A cell with more capacity spends less of its life at the extremes of charge and discharge, and it is life at the extremes that ages a NiMH module. On a car you intend to keep, it is the best value per dollar in the range.
Our packs are built to outlast their warranty. In practice we typically see at least double the warranty period, and frequently a good deal more.
That is what we observe across the packs we build, not a guarantee batteries are wear items and conditions vary. The warranty is the floor we stand behind, not our estimate of the pack’s life.
You can, and it is a false economy. Here is why.
Every one of the 28 modules in your Gen 2 Prius pack has lived the same life — the same heat, the same cycles, the same twenty years. When one fails, the others are rarely far behind. Replace the single worst module and the pack works again, briefly. A couple of months later the next-weakest one fails, and you are back where you started.
That becomes an expensive game of whack-a-mole. Each round costs another diagnosis, another teardown, more labor and more downtime, and none of it addresses the root problem: the pack as a whole has reached the end of its service life.
This is why we test and replace at the module level across the entire pack. It is also why we can offer 12 to 48 months of warranty — you cannot warranty a pack you have only partially repaired.
For most owners, clearly yes and this car makes the strongest case of any hybrid we service. At $999 for a remanufactured pack, the repair costs a fraction of what a running Gen 2 Prius sells for, and these cars comfortably pass 250,000 miles once the battery is sorted.
Selling a Prius with a known battery fault means accepting a discount several times the cost of the repair, because every buyer prices in the fix plus a risk margin and on a Prius, buyers know exactly what a battery costs.
Dealership replacement typically runs $3,000 to $5,000 for a new pack, with labor billed separately by the hour on top. Greentec Auto starts at $999 including installation — up to 50% below dealership pricing, quoted as one number.
Yes, largely. The mileage loss comes from the engine compensating for a pack that can no longer assist or hold charge. Restore the pack and economy returns close to original — 45 to 48 mpg — along with electric-only driving and normal acceleration.
For most owners the fuel savings alone recover a meaningful share of a $999 pack within the first couple of years.
Yes. Financing is available on every pack, so a replacement can be spread rather than paid up front.
Yes. Our mobile installation team comes to your driveway, workplace or preferred location. A certified technician handles delivery, installation and testing on site no towing, no waiting room, no dealership visit.
No. The Gen 2 Prius pack carries 201.6 volts, which is enough to be fatal. Correct service-plug isolation, torque specification on the high-voltage connections, and post-installation calibration all require training and equipment. Installation is included in every price we quote.
Most Gen 2 Prius replacements are completed in a single visit. The pack is accessed from inside the cabin behind the rear seat, which makes it far more straightforward than packs mounted under the floor.
Every module in your returned pack is tested individually. Modules still meeting spec go back into remanufactured packs. Those that fall short move to Greentec Energy for second-life use in home energy storage and EV conversions. Only what cannot be reused at all is processed for material recovery.
Eco-friendly recycling is included with every replacement at no charge.
Our Gen 2 Prius packs are rated 4.92, 4.84 and 4.82 out of 5 by verified customers.
Don’t wait for the hybrid system to fail completely. A Gen 2 Prius with a healthy pack returns close to 48 mpg and will run for years more which makes this one of the easiest financial decisions in hybrid ownership.
Start with a diagnostic. On a car this age a clogged cooling fan, a failed sensor, or a weak 12V battery can produce the same symptoms and cost a fraction to fix.
If you notice warning lights on your dashboard, don’t rush to the dealership for an expensive diagnostic report. Many local auto parts stores can scan your vehicle and provide error codes for free just ask them to run a quick scan with a diagnostic tool.
Above, we’ve listed some of the most common hybrid error codes. Keep in mind that the check engine light must be onfor major issues to be detected. If your vehicle is experiencing hybrid battery failure, dealerships often charge thousands of dollars for a replacement typically with a limited warranty.
At Greentec Auto, we offer a cost-effective alternative, providing high-quality hybrid battery replacements at a fraction of the price. Plus, we back our batteries with a comprehensive warranty to give you peace of mind.
A typical Toyota Prius hybrid battery from 2004–2009 lasts around 8 to 10 years or 100,000 to 150,000 miles. Lifespan can vary depending on driving habits, climate, and maintenance. If your Prius shows warning lights or decreased mileage, it’s time to consider a replacement.
The Toyota Prius battery replacement cost can range from $1,500 to $3,000 at Greentec Auto, which is up to 50% less than most dealership prices. The final cost depends on your model year and the type of battery (new or remanufactured).
Yes. Our mobile installation service sends certified technicians to your home or workplace for quick, professional installation. We handle delivery, setup, and recycling of your old battery—all on-site.
Every 2004–2009 Toyota Prius hybrid battery from Greentec Auto includes a comprehensive warranty ranging from 12 to 48 months with unlimited mileage. Extended warranty options are also available for extra peace of mind.
Absolutely. Our Canadian division, Greentec Auto Canada, offers hybrid battery replacements and mobile installation across major cities. You can expect the same quality service, warranty, and professional installation throughout North America.
Use code LABORDAYSALE2026 for an additional 10% off on all EV and Hybrid Battery Replacements, discount capped at $500.
Promo End Sept. 9th
*Offer cannot be combined with other promotions.
