Much is made of EVs having fewer moving parts than petrol or diesel vehicles and whilst true, proper vehicle checks are still essential, especially when it comes to the battery. The battery pack is the most valuable component of an electric vehicle and understanding its condition before purchase can dramatically influence long-term performance, reliability, and even resale value.
The importance of vehicle checks
EVs require more than a standard mechanical inspection. A thorough EV battery health check, combined with diagnostic reviews and servicing, helps confirm the vehicle is safe, efficient, and accurately priced. These checks often extend beyond traditional areas and include software diagnostics, charging system assessments, cooling system evaluation, and EV battery monitoring systems that all contribute to daily performance.
The role of a battery in an EV
The battery is essentially the engine of an electric car or van. Its condition determines range, charging speed, energy efficiency, and overall lifespan. A degraded battery can significantly limit usability, making a used EV battery health check one of the most important steps before buying.
Several factors affect electric car battery degradation, including:
- Frequent rapid charging
- Exposure to extreme temperatures
- Sustained heavy loads or towing
- Missed or delayed software updates
- Inconsistent charging habits
Being aware of these factors helps buyers understand how an EV has been used and how it may perform in future.
Can you test battery health on an electric car or van?
Modern EVs store detailed diagnostics, making it straightforward for technicians to perform an EV battery diagnostics test.
Depending on the vehicle, technicians may use:
- Manufacturer diagnostic software (e.g., Tesla Toolbox, Nissan Consult)
- Third-party EV battery diagnostics tools such as EV-OBD readers
- On-board reporting via infotainment systems or mobile apps
- Specialist dealer or workshop equipment
These tools reveal essential data such as State of Health (SoH), remaining capacity, charging cycle history, internal resistance, and temperature patterns. Most workshops provide a written report to help buyers compare results and make an informed decision.
EV Battery State of Health
State of Health is the most important metric in any electric vehicle battery health check. Displayed as a percentage, SoH shows how much usable capacity the battery retains compared to when it was new. Healthy used EVs typically range between 85–95%, though this varies by model and usage.
The future: Predictive Battery Analytics
Predictive battery analytics is transforming how drivers evaluate used EVs. By analysing historical charging habits, temperature exposure, and degradation patterns, these tools offer a clearer forecast of future battery lifespan. This means more accurate pricing, stronger EV battery warranty checks, and greater buyer confidence as the second-hand EV market continues to grow.
Why Buy a Used EV from Van Monster?
As the UK’s largest independent used van supplier, our Van Monster Difference offers peace of mind and reassurance that you are working with an established and reputable used vehicle supplier.
With branches all over the UK, and all our available vehicles shown online, we offer the UK’s largest choice of quality used vehicles.
Every electric vehicle undergoes thorough preparation to ensure you’re getting a carefully checked, used EV you can trust. You’ll benefit from flexible extended warranty options, our Price Match Guarantee, and complimentary Accident Aftercare to keep you mobile after a non-fault incident. With added protection, expert support, and high-quality vehicles, we’re here to help you drive your next EV with total confidence.
