Got an EV?
ClearWatt is your personal EV companion helping you get the most out of your electric car. Understand your battery health, real-world range, charging, warranties and more all in one place.
Start free today, unlock deeper insights when you’re ready.
For most, owning an EV is a new experience
EV ownership comes with new questions that don’t always have obvious answers - especially early on. ClearWatt helps unpack those questions, helping you understand your battery health and giving you confidence in your EV’s range, charging and day-to-day performance.
Everything you need to understand your EV - in one place
Learn (Free)
Plain-English EV guidance
Easy-to-follow EV Explained guides
Battery basics, charging, range and care
Road tax, MOT status and vehicle specs
Know your car (Free)
Your EV, clearly explained
Your vehicle’s specification and configuration
Basic battery details and factory capacity
Key ownership information at a glance
Go deeper (Paid)
Battery health & premium insights
Independent battery health assessment
Real-world range and charging behaviour
Valuation, warranties, provenance and more
Small battery changes are normal - bigger differences are worth understanding
Understanding your battery health gives context to everything else - from real-world range and charging behaviour to long-term ownership and resale value.
Batteries naturally change over time
A moderate reduction in battery performance is normal as an EV ages.
It can affect range and charging
Over time you may notice changes in range or charging speed, especially in colder weather.
Every EV ages differently
Battery changes depend on driving, charging and manufacturing differences.
37 %
of EV drivers notice their range drop over time.
Understanding your battery health — without the hassle
No garage visits. No cables. No disruption to how you drive and charge.
ClearWatt runs quietly in the background
We securely collect the data we need from your car and phone, automatically. In most cases, there’s nothing for you to do.
Just use your EV as normal - we’ll do the rest
We’ll automatically collect enough data from a few typical drives or charging sessions — no special trips needed.
We’ll then generate your personalised EV Health Report
You’ll receive a clear PDF explaining your battery health, real-world range, charging behaviour — and what’s normal for your EV.
