Evidence, with limits
Company
· 3 min
A battery passport backed by a history of use
Connect battery records with telemetry history, audited passport edits and a public QR page. Explore Adaptr Cloud’s capabilities and limitations.
The Adaptr Cloud journal
Batteries, the law, and what you can actually prove
Plain-English reading of the regulation, which brands let you see your own battery's health, and why nobody can tell you its state of health yet. Written by people who don't sell batteries.
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What it must contain
Regulation
· 3 min
What does a battery passport need to contain?
A sourced guide to EU battery passport scope, responsibilities, information requirements and the distinction between Great Britain, Northern Ireland and EU supply.
All articles
0x42xx
Data access
· 10 min
Reading a Pylontech over CAN: what's actually there
The most common battery in a UK cupboard, frame by frame. What it sends, what it doesn't, and why your inverter may be mislabelling it.
Second life
State of health
· 6 min
Where a used battery's value comes from
A used car with no service history is worth scrap. With one, it's worth money. The same is true of a battery leaving an EV at 75%.
A logbook
Regulation
· 4 min
What a battery passport actually is
A logbook for a battery. Who writes in it, who can read it, what goes on the sticker, and what happens when the battery changes hands.
Every protocol
Data access
· 14 min
Every language a battery speaks, mapped
CAN, RS-485, SunSpec, SMBus, NMEA 2000. What each one actually carries, which give you cycle count, and why none of them agree.
One country
Regulation
· 8 min
The battery-data law that exists in one country
The EU told every member state to force real-time health data out of home batteries by May 2025. Denmark did it. Nobody has complied anywhere.
E-bike fires
Safety
· 7 min
Why e-bike batteries catch fire
The fire service data, the mismatched chargers, and the one question to ask before you buy a replacement pack.
Own homework
Company
· 5 min
Nobody should grade their own battery
Why Adaptr exists, what it is for, and why a manufacturer scoring its own battery's residual value is the problem we set out to fix.
Nobody knows SoH
State of health
· 9 min
Why nobody can tell you your battery's state of health
The cloud tells you how full it is. Almost none of them tell you how worn it is. Where the number has to come from, and why it takes months.
Your right to the data
Regulation
· 6 min
You already have the right to your battery's health data
Article 14 has been in force since August 2024. It gives the owner — and anyone acting for them — read-only access. Most people have never been told.
Who shows you SoH?
Data access
· 11 min
Which home battery brands let you see state of health?
A league table of twelve brands by what their own portal and API will show you. Capacity, per-cell voltage, cycle count, state of health — and who hides what.
18 Feb 2027
Regulation
· 8 min
What you must do by 18 February 2027
The battery passport becomes mandatory in sixteen months. Here is what the regulation actually asks of an installer, an operator and an owner — and what it doesn't.
Register a battery passport. It's free.
Type it in, it's free. Connect it, and we read what the battery already reports. Nothing to install, no password to hand over.