Don't Buy a Used EV Without a Battery SOH Check
Buying an electric car in Greenwich, Blackheath, Woolwich, Eltham or Charlton? Get an independent State of Health (SOH) check before you buy — the single most important number for judging a used EV battery.
Fast booking • Report same day • Mobile service across Greenwich
📍 Covering Greenwich · Blackheath · Woolwich · Eltham · Charlton · Kidbrooke · Plumstead · Lewisham · Bexleyheath
Why Get An SOH Check Before You Buy?
State of Health is the industry standard figure for judging how much life is left in an EV battery. Here's why it matters so much to buyers.
One Clear Number
SOH gives you a single, comparable percentage figure that reflects the battery's overall condition, making it easy to compare between different cars.
Measured, Not Guessed
We measure SOH directly from the battery management system using diagnostic equipment, not from the dashboard's own estimate.
Negotiate With Confidence
A lower SOH than expected gives you solid grounds to negotiate the price, or to walk away from a bad deal entirely.
Clear, Honest Report
You get a plain-English report showing the SOH percentage, what it means for real-world range, and our honest recommendation.
What Is SOH And Why Does It Matter?
A quick explanation for buyers who are new to EV terminology.
State of Health (SOH) is a percentage figure representing how much of a battery's original capacity remains available for use. A battery at 100% SOH performs as it did when new; a battery at 85% SOH has permanently lost 15% of its usable capacity.
SOH is widely used across the EV industry, from manufacturers to independent inspectors, because it gives buyers and sellers a single, comparable figure — rather than relying on vague terms like "good condition" or "still goes far enough."
Because SOH directly affects real-world range and resale value, it's one of the first things any serious used EV buyer should ask for before agreeing a price.
How It Works
Simple, fast and hassle-free — we can often check the vehicle before you complete the purchase.
Contact Us
Call or WhatsApp us with the car details and seller location in Greenwich.
We Book The Check
We arrange a time with you or the seller, at a location that works for you.
SOH Measurement
Our specialist attends and measures the battery's State of Health directly from the BMS.
Get Your Report
Receive your easy-to-read report same day, so you can decide with confidence.
What's Included In The Check
A thorough inspection covering everything that affects battery health and value.
The core measurement of remaining battery capacity vs. original spec.
Identifies weak or imbalanced cells that could affect SOH readings and future reliability.
Full diagnostic scan for stored and pending battery/BMS fault codes.
Realistic expected range based on the measured SOH.
Onboard charger and charge port inspection.
Confirms remaining battery warranty where applicable, often tied to SOH thresholds.
Plain-English summary with our honest recommendation.
Areas We Cover Around Greenwich
Mobile service — we come to you, the seller, or a dealership anywhere in the area.
Simple, Transparent Pricing
No hidden fees. Know the price upfront before you book.
Pre-Purchase Battery SOH Check
- Measured State of Health (SOH) %
- Cell balance assessment
- Full fault code scan
- Same-day written report
- Mobile — we come to the vehicle
Serving Greenwich, Blackheath, Woolwich, Eltham, Charlton and the wider South East London area.
Frequently Asked Questions
Do you cover my area around Greenwich?
We operate as a mobile service across Greenwich and the surrounding areas, including Blackheath, Woolwich, Eltham, Charlton and Lewisham. Get in touch to confirm coverage for your specific location.
What's a "good" SOH percentage for a used EV?
This varies by vehicle age, mileage and model, so there's no single number that applies to every car. Your report will show the measured figure alongside context on what's typical for that specific vehicle.
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 SOH 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 around Greenwich.
Know The Real SOH Before You Buy
An SOH check costs a small fraction of what an overvalued, degraded battery could cost you. Get in touch today and buy with confidence, anywhere in Greenwich.