Battery health,
certified.
Independent, software-only battery certificates for the used EV market. Trusted by inspectors, dealers and leasing companies in 14 countries.
From plug-in to signed certificate
in three steps.
No proprietary hardware. Connect any OBD2 dongle, read the battery, and issue an independently verifiable certificate on the spot.
Connect
Pair a standard OBD2 Bluetooth dongle with the BattGrade app. Hardware-agnostic: use the one you already own.
OBDLink MX+ · pairedRead
The app reads the vehicle's BMS (cell voltages, temperatures and charge cycles) and normalizes them into a State of Health score.
Reading cell voltages · 64%Certify
Submit to the BattGrade cloud and receive a digitally signed PDF certificate with a QR anyone can verify in one scan.
PKS-2026-EU-00012345Built for the people who move the EV market.
One certification engine, four audiences. Each tuned to the job, the margin and the trust signal that matters most.
What's inside every BattGrade certificate.
Not a grade out of thin air, but a transparent, signed document that anyone in the chain can independently verify.
Cell-level analysis
Per-module voltages, temperatures and charge cycles read straight from the BMS.
QR verification
Every certificate carries a unique QR that resolves to a live, public proof-of-authenticity page.
Digital signature
Cryptographically signed and hashed, stamped with the algorithm version used to score it.
6-month validity
Time-bound by design, so a certificate always reflects a recent, honest reading.
Why teams choose BattGrade.
A trust layer built to plug into how the used-EV market already works, not to replace it.
Software-only
No proprietary box to buy. Works with the OBD2 dongles inspectors already carry.
Multi-marketplace
Certificates and badges that travel across every listing platform you sell on.
Multi-language
Issue and verify in eight languages across Europe and North America.
White-label ready
Put your own brand on the certificate. The trust is yours; the engine is ours.
Cell-level analysis
Scores grounded in per-module data, not a single dashboard estimate.
EU Battery Passport ready
Aligned with incoming regulation so you're compliant before the deadline.
Trusted where the work happens.
“We went from arguing about battery health to handing buyers a signed number. It closes the conversation, and the sale.”
Ready to certify with confidence?
Join 200+ inspectors and dealers issuing independent battery certificates the used-EV market actually trusts.