Observed arrival · 2026-10-01
TrueAmps checks the numbers on jump starters and chargers
A battery-charging calculator and reference site that compares jump-starter and charger specifications with manufacturer data and public safety listings.
- For
- Drivers comparing jump starters and battery chargers
- Worth noticing
- Its calculator estimates 7.5 hours for a 50 Ah battery at 50% charge on a 5 A charger, using NOCO's published tables.
Field notes
The calculator offers preset charger choices, including NOCO GENIUS models and several generic amperage options, and lets readers choose a starting charge level. Its examples show why the site distinguishes headline claims from other specifications: the GB70 listing gives two weights on the same manufacturer page, while the GB40 record points to an ETL mark listed by Intertek to UL 2743. TrueAmps says it dates its checks and links the source pages.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue