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ClearWatt vs Altelium: Battery Test vs Battery Warranty
ClearWatt's Battery Scorecard is an NFDA-developed dealer report. Altelium is a Lloyd's-backed battery warranty MGA. Two different products. Sourced.
ClearWatt vs Altelium
A comparison of two products that solve different problems.
ClearWatt is a UK EV data company. Its dealer-facing Battery Scorecard launched in December 2025, developed in partnership with the National Franchised Dealers Association (NFDA), aligned with the EV Approved (EVA) scheme1. ClearWatt also offers passive consumer monitoring through its Copilot app2.
Altelium is a battery insurance MGA — a Lloyd's Lab Cohort 9 alumnus3, distributing extended battery warranties through the GardX EVerity programme4, underwritten by 'A'-rated insurers through the Lloyd's of London market5.
A test answers "what is the condition of this battery now?" A warranty answers "what happens if this battery fails later?"
At a glance
| ClearWatt | Altelium | |
|---|---|---|
| Product type | Battery diagnostic + EV data platform | Battery warranty insurance (MGA) |
| Type of credential | NFDA-aligned (EVA scheme)1 | Lloyd's of London market underwriting5 |
| Output | A+ to D Battery Scorecard + Flash Report; consumer EV Health Report16 | Warranty eligibility assessment + extended warranty product (1–3 year terms)5 |
| Test method | OBD-based dealer Battery Scorecard; passive consumer monitoring2 | Assessment as part of warranty programme |
| Test time (dealer) | ~2 minutes (Battery Scorecard)7 | Not stated |
| Pricing | £39.99 consumer; dealer pricing on request6 | Variable (warranty pricing) |
| Major partnerships | NFDA member dealers via EVA scheme1 | GardX EVerity4 |
| Geographic scope | UK | UK |
Different problems, different products
ClearWatt and Altelium are not direct competitors. ClearWatt sells a battery test (and broader EV data products); Altelium sells a battery warranty.
A dealer could credibly use both: a ClearWatt Battery Scorecard to grade the vehicle at intake, and an Altelium warranty to bundle financial protection into the resale proposition.
What neither system provides
Neither ClearWatt nor Altelium is on CARA Europe's approved providers list8. Neither holds TÜV certification of a testing methodology. Neither ships a cell-level severity heatmap as a standard certificate feature. Neither independently calculates SoH from raw cell-level data with a published methodology.
For dealers who want an independently calculated SoH with a cell-level severity heatmap, backed by TÜV certification of the testing methodology, with the AVILOO Flash Test also listed on CARA Europe's approved providers list, those features are available from AVILOO — the system Battery Health Check uses8.
See how Battery Health Check compares
Sources
This page reflects publicly available materials reviewed and captured on 5 May 2026.
- ClearWatt launches Battery Scorecard to support used EV sales — GreenFleet, 5 December 2025.
- ClearWatt approach — ClearWatt's product overview.
- Altelium — Lloyd's Lab alumni profile — Cohort 9 / green insurtech.
- GardX unveils EVerity — partnership launch announcement, 9 November 2024.
- Used EV battery health test and warranty service launches — Fleet World.
- ClearWatt EV Health Test — ClearWatt's consumer test page.
- ClearWatt launches new Battery Scorecard for used EV assessment — AM Online, December 2025.
- CARA Europe approved providers list — neither ClearWatt nor Altelium on the list.
See also: AVILOO vs ClearWatt | AVILOO vs Altelium | All Providers Compared
Battery Health Check is an independent provider of EV battery diagnostic services using AVILOO technology. This comparison has been prepared by Battery Health Check and is not an official AVILOO corporate publication.
We endeavour to provide accurate and up-to-date information, but details may change. If you spot an error, please let us know.