Don't Buy a Used EV Without Knowing Its True Battery Capacity
The dashboard doesn't tell the full story. Get an independent battery capacity check before you buy — real usable kWh capacity measured and compared to the original spec.
Fast booking • Report same day • Mobile service across the UK
Why Get A Capacity Check Before You Buy?
Every EV battery loses usable capacity over time. Knowing exactly how much is left tells you what you're really paying for.
Real kWh, Not Guesswork
We measure the battery's actual usable capacity in kWh, not just what the dashboard estimates, which can be inaccurate or reset by the seller.
Compare To Original Spec
We compare the measured capacity against the manufacturer's original figure, giving you a clear percentage of what remains.
Price It Correctly
Lower remaining capacity should mean a lower price. Our report gives you solid evidence to negotiate with confidence.
Clear, Honest Report
You get a plain-English report showing remaining capacity, percentage lost, and our honest recommendation before you buy.
How It Works
Quick and simple — we can often check the car before you complete your purchase.
Contact Us
Call or WhatsApp us with the car details and seller location.
We Book The Check
We arrange a convenient time with you or the seller.
Capacity Measurement
We connect diagnostic equipment to measure the battery's true usable capacity and cell condition.
Get Your Report
Receive an easy-to-read report same day, so you can buy with confidence.
What's Included In The Check
A complete inspection covering everything that affects battery capacity and value.
The battery's real current capacity, not just the dashboard estimate.
Compares measured capacity to the manufacturer's original figure as a clear percentage.
Identifies weak or imbalanced cells reducing usable capacity.
Overall battery health rating based on capacity and condition.
Full diagnostic scan for stored and pending battery/BMS fault codes.
Realistic expected range based on the measured capacity.
Confirms remaining battery capacity warranty where applicable.
Plain-English summary with our honest recommendation.
What The Report Looks Like
A simple, easy-to-understand breakdown — here's an example of the kind of figures your report will show.
| Measurement | Result |
|---|---|
| Original battery capacity | 64.0 kWh |
| Measured usable capacity | 56.3 kWh |
| Capacity remaining | 88% |
| Estimated real-world range | 218 miles |
Example only — your report will reflect the actual measured figures for the specific vehicle checked.
Simple, Transparent Pricing
No hidden fees. Know the price upfront before you book.
Pre-Purchase Battery Capacity Check
- Measured usable capacity (kWh)
- Capacity vs original spec comparison
- Cell balance & SOH assessment
- Full fault code scan
- Same-day written report
- Mobile — we come to the vehicle
Covers all major EV brands including Tesla, Nissan, BMW, Hyundai, Kia, VW, Audi, Mercedes and more.
Frequently Asked Questions
Isn't the range shown on the dashboard enough to judge capacity?
No. Dashboard range estimates are affected by driving style, temperature and recent trips, and can be reset by the seller. A capacity check measures the actual battery, not an on-screen estimate.
What's a "normal" amount of capacity loss?
Most EV batteries lose a small percentage of capacity per year of use, though this varies significantly by model, age, mileage and how the car has been charged and driven. Your report will show exactly where this car stands.
Which EV brands and models can you check?
We check all major electric vehicle brands including Tesla, Nissan Leaf, BMW i3/iX, Renault Zoe, Hyundai Kona/Ioniq, Kia e-Niro/EV6, VW ID range, Audi e-tron, Mercedes EQ range, and more.
How long does the check take?
Most capacity checks take between 45 minutes and 1.5 hours depending on the vehicle and diagnostic access required.
Can you check the car at the seller's address?
Yes, we operate as a mobile service and can attend the seller's home, a dealership, or a neutral meeting point across the UK.
Know The Real Capacity Before You Buy
A capacity check costs a small fraction of what unexpected battery loss could cost you. Get in touch today and buy with confidence.