Don't Buy a Used EV Without a Full Battery Diagnostic Check
One complete diagnostic covering everything that matters — capacity, health, cell balance, fault codes and more — so you get the full picture before you buy, not just one piece of it.
Fast booking • Report same day • Mobile service across the UK
Why Get A Full Diagnostic Check Before You Buy?
Individual checks tell you part of the story. A full diagnostic pulls everything together into one clear picture of the battery's true condition.
The Complete Picture
Rather than checking one thing in isolation, we assess capacity, health, cells, faults and systems together — because problems are often connected.
Professional Diagnostic Tools
We use manufacturer-level diagnostic equipment to pull live and historic data directly from the battery management system.
One Check, Full Confidence
Save time and money by covering everything in a single visit, instead of booking multiple separate inspections.
One Clear Report
Everything is brought together into a single, easy-to-read report with an overall condition rating and our honest recommendation.
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.
Full Diagnostic Scan
We connect professional equipment to run a complete diagnostic across the battery, BMS and related systems.
Get Your Report
Receive an easy-to-read, complete report same day, so you can buy with confidence.
What's Included In The Check
Our most complete inspection — everything from our individual checks, combined into one visit.
Overall battery health based on measured capacity and condition.
Real kWh capacity compared against the manufacturer's original figure.
Identifies weak, damaged or imbalanced cells within the pack.
Reads live and stored fault codes across battery, BMS and charging systems.
Onboard charger, charge port and rapid-charging behaviour assessment.
Realistic expected range based on the battery's actual current condition.
Confirms thermal management is functioning correctly to protect the battery.
Confirms remaining battery warranty and checks for prior repair history where visible.
How This Compares
If you're not sure which check you need, here's how the full diagnostic compares to our individual checks.
| Covers | Single Check | Full Diagnostic |
|---|---|---|
| Battery capacity & SOH | Capacity check only | ✓ Included |
| Range degradation estimate | Range check only | ✓ Included |
| Charging system & charge port | Charging check only | ✓ Included |
| Warning light & fault codes | Warning light check only | ✓ Included |
| One visit, one report | — | ✓ Included |
Simple, Transparent Pricing
No hidden fees. Know the price upfront before you book.
Pre-Purchase Full Battery Diagnostic Check
- SOH % and measured capacity
- Cell balance assessment
- Full live & stored fault code scan
- Charging system check
- Real-world range estimate
- 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
How is this different from your other individual checks?
Our individual checks (battery condition, range loss, charging, warning light, capacity, high voltage) each focus on one specific area. This full diagnostic combines all of the key elements into a single, complete inspection.
Do I still need a separate high voltage safety check?
This diagnostic covers battery health, capacity, cells, charging and fault codes in depth. If you specifically want a dedicated insulation resistance and HV wiring safety test, let us know and we can advise whether to add this on.
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?
A full diagnostic check typically takes between 1 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.
Get The Complete Picture Before You Buy
A full diagnostic check costs a small fraction of what an undiagnosed battery problem could cost you. Get in touch today and buy with confidence.