
Battery insights that empower your drive
Worried about your electric vehicle's battery life?
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Monitor battery health over time with reliable and accurate data
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Get a clear picture of your EV’s actual range compared to its original condition
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Avoid unexpected and costly battery replacements or major repairs
Driving an EV?

Before Voltest
Unexpected Repair Costs
Battery repairs or replacements can reach up to $15k. Catch hidden issues early to protect your budget and ensure your vehicle's reliability
Unknown Range Performance
Without a clear battery health status, you can't accurately assess your vehicle's range compared to when it was new
Reduced Resale Value
Battery health is key to your EV’s resale value. Without this insight, you might miss out on its full worth

After Voltest
Peace of Mind for Battery Health
Track your EV's battery State Of Health (SOH) in real-time to prevent costly repairs and potential issues
Range Transparency
Keep track of battery health to know how it impacts your range as time goes on
Maximized Resale Value
A verified battery health report ensures you can retain higher value when selling your vehicle
Considering to buy an EV?

Before Voltest
Blind Purchase
Buying an EV without clear battery health data is a gamble, leaving you unsure about its true condition and value
Hidden Costs
Lack of proper battery evaluation can lead to spending more on an EV than it's worth due to unseen battery degradation
Resale Challenges
Selling an EV without certified battery health data is more difficult and may result in lower resale values, especially post-warranty

After Voltest
Informed Purchasing Decisions
Get the battery health data you need to confidently invest in an EV, ensuring you avoid hidden battery issues and degraded performance
Risk Mitigation
Avoid overpaying by knowing the true state of the EV battery. Secure fair deals and prevent unexpected costs
Resale Value Protection
Our certified battery health reports help boost your EV's resale value, even as it nears or passes the OEM warranty period
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Let customers speak for us
from 13 reviews
Bought this for my Jaguar I-PACE, and it has already paid for itself by identifying a minor battery issue that I caught early. The dealership handled it under warranty, saving me from a much bigger problem down the road.

As someone who loves tinkering with cars, Voltest has been a great tool to keep my 2014 Nissan Leaf running smoothly. It’s fun to see the inner workings of the battery, and it’s helped me stay ahead of any potential issues.

I was told by a mechanic that my Kia Niro EV needed a new battery due to a range drop. Before going ahead, I used Voltest to run my own check, and it turned out the battery was fine—it was just a calibration issue. Saved me from an expensive mistake

After my battery degraded unexpectedly in my BMW i3, I ran a Voltest diagnostic. The report helped me push my claim through with the insurance company.

We have a small fleet of electric delivery vehicles. I bought Voltest to help monitor our batteries regularly. It’s been incredibly useful in identifying which cars need attention before bigger issues arise. Highly recommend for any business managing multiple EVs.

I was about to purchase a 2016 Nissan Leaf but decided to run a Voltest scan before sealing the deal. Glad I did! The battery showed significant degradation, much worse than the seller claimed. I walked away from the deal, saving myself thousands.

A friend of my suggested me to test my VW ID4 battery with Voltest, as i saw some noticeable range reduction in the last two years. I tested my ID4 and it confirmed a lower than normal range.
Also, I was able to spot the reason: an imbalanced cell in the battery pack. Now I know that i should monitor and check it every other month, just to be keep an eye on the health

I got this for my Hyundai Ioniq 5. Car is quite recent, but range was crap. I bought Voltest and gave a scan to the battery. Turns out there's a faulty module that was causing trouble.
Went to the dealership and told them about this, they checked with their SW and the replaced my battery

I had a 2017 Tesla Model S that i wanted to sell.
I've always babied the car and wanted to price it above market. I used Voltest to certify the real health during the sale, and was able to sell the car with ease.

I've bought Voltest during their first batch of sale. The product arrived in just a few days and was really easy to use. I've diagnosed a car that I wanted to buy, a used 2013 Tesla model S. The report gave me all the information about the battery state of health, down to the cell level. I know exactly how the car's battery is doing, and I bought the car at the right price thanks to it.
FAQs
Does Voltest work with my EV?
Check the Supported Vehicles page to see if your vehicle is listed. If not, contact us, and we'll notify you when Voltest becomes compatible with your vehicle.
Is Voltest quick to use?
Yes, the entire process to generate a battery certificate takes just a few minutes. You can easily install it in your car without tools or the need for a mechanic. Simply:
- Plug Voltest into the OBD-II port, typically located under the dashboard on the left side.
- Download and run the Power Check Control app (available on iOS and Android).
- Follow the diagnostic steps—it will take up to 3 minutes to generate the battery certificate.
How reliable are the results?
Voltest has been certified by the Car Remarketing Association Europe (CARA-Europe) and is already in use as an official testing device by hundreds of dealerships across Europe. We use Machine Learning-based models to generate our State of Health assessment, which forms the basis of our battery report.
What information will I receive about the battery?
With Voltest, you’ll receive detailed information on the health of every single battery cell. The certificate also includes essential data such as overall State of Health, total number of cycles the battery has completed, average consumption, and energy usage of your vehicle.
What is included when I order today?
When you order today, for $79.99, you’ll receive a Voltest device (normally $99.99) and a free 1-year subscription (regular price $39.99/year) to generate unlimited Voltest Battery certificates.