Generally, how do hybrid batteries work and fail?

Every hybrid and electric vehicle battery is made of multiple batteries. Even your 12 volt battery is made of 6 smaller batteries referred to as cells.

In regular hybrids they are connected in series, one to another, positive to negative. Each time you add an additional battery in series the voltage increases. With this type of configuration high voltage can be easily achieved. However, just like older Christmas lights, if one fails the whole battery fails.

Why is “cell swapping” only a temporary fix?

When a hybrid battery fails it is usually because of one or two of the smaller batteries failed. So why not use a volt meter to find the bad ones and just replace them instead of replacing the whole thing?

Well, when one or two fail, there are always several others on the verge of failing too. Many people “cell swap” their Prius battery to get it working again, but it is almost always short lived. There are many YouTube videos claiming that they fixed their battery for $50 and it lasted them several more years.

This is a great method if you are in a pinch, but from our experience we have yet to see such good results from a “cell swap”. Using a volt meter to test hybrid batteries is a very crude method and only tells you if a battery is totally bad. It does not tell you if it will be failing soon.
Professional test equipment is required to determine the remaining life in a battery and its overall state of health.

How do we test and remanufacture hybrid batteries?

We first disassemble the battery assembly to its bare battery. Once it reaches that point it is ready for testing.

There are no simple ways or a single test that can tell you the true health of a battery. It takes time and several instruments/machines. We test each module (aka “cell”) and the data is collected and stored. This process takes several days to complete.

At the end all of this, the data is compiled and put through an algorithm which gives us an overall state of health. We are able to see everything about each battery. With this information we are able to predict the remaining life of each battery, whether it is 1 month or 10 years. The short-life batteries are sent for recycling and the long life batteries are used to keep your car on the road at a fair and affordable price.

Can I change my battery myself?

Yes! And we have the step-by-step videos to show you how to do it properly and safely. Almost all hybrid batteries and fairly simple to change. While there are some that require special tools they are not common. ALL of the batteries we sell online are easy to install. We provide step by step videos, list of basic tools needed, and free technical support with one of our ASE certified technicians.

How dangerous are hybrid batteries?

Most hybrid batteries range from 140-280 volts which can be painful at the least. This high voltage can be very dangerous but we feel that most of what we hear and read about the danger servicing these batteries is just stigma.

Fortunately, most are equipped with safety plugs, covers over the wires and bus bars, and redundancies that force you to disable the battery before removing or opening it. Once the safety plug is removed the voltage drops to a much lower level which is much safer and workable.

In our battery remanufacturing department, we do not use safety gloves when working with our batteries. It is not because we take risks or that we are very skilled. It is because once the safety plug is removed and the battery disabled, it is not possible to get a high voltage shock. Technically, it is possible to get a shock if you know exactly where to touch, but it is not realistic and at a much lower voltage.

What if I have a problem when installing my battery?
Simply call us and speak with one of our ASE certified technicians. We will walk you through the trouble shooting process and get your hybrid up and going again!

How long will it take to ship my battery?

Most batteries ship the same day if ordered before 2:00 pm PST. Rebuild Kits take 1-3 days to arrive and complete battery assemblies take about 2-5 business days.

How long do your remanufactured batteries last?

After our testing, we are able to see virtually everything about each individual battery’s state of health. That gives us the ability to predict life expectancy and performance. We segregate our batteries into different warranty lengths based on their performance in our testing process.

Which ever warranty you purchase, we make sure to exceed the life expectancy of your warranty.

What is a core charge and why is it required?

A core charge is a deposit to ensure that we receive your old battery back. The old battery has value to us. We can fix some of them and recycle the rest. This helps us keep the cost of remanufacturing down which is how we are able to offer such low prices.

How can I have my battery installed into my vehicle?

  1. Install it yourself! We can provide instructional step by step videos, tools, and even technical support. Click here for to see our videos.
  2. At our facility, we will install most hybrid batteries for $200.

What is your return policy?

We offer returns only if the packages are unopened. If you are returning an unopened package, you will be charged a 25% restocking fee. There are no returns on opened packages. Please be sure to have your vehicle diagnosed first, so that you know our hybrid battery will fix your issue. If you install the battery and your problem is not fixed and it is because the hybrid battery was never the problem to begin with, you will not be able to return your battery because the package has been opened. 

Can you come and install it at my location?

We do offer local installation. Please contact us for rates. We are capable of installing most hybrid batteries away from our shop. Our technicians are ASE certified and will bring all the tools, training, and knowledge they need to replace your hybrid battery at your convenience. Please note that the fee for mobile installation is not refundable. You are reserving a time slot on our calendar for us to send a technician from our facility to your location. If the technician arrives and we cannot contact you or you are not at the location or available, the fee for the installation still applies due to the travel time. If you need to reschedule please let us know in advanced.



  • I highly recommend this place. They are easy to deal with, and prices are reasonable. Forget the dealership, they will rip you off. But not this place.

    They specialize hybrids and electric cars. Chris is awesome

    Christine F.

    Yelp Reviewer
  • Very quick and easy to talk to as well as accessible with pricing that is backed by an amazing team!

    Emilio G.

    Yelp Reviewer
  • Found about these guys from people on Youtube who brought their Prius battery’s from them. I must say these guys are amazing battery came in two business days as promised.

    Chris I believe he’s the owner super cool dude so as Tyler both super cool. Was having problems after I put my hybrid battery in called them got it fix with no problems. I would recommend them!

    Ant H

    Google Reviewer

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