Check your battery before it leaves you stranded

A car battery rarely warns you before it dies. Clip this tester on and see how healthy your battery is, so you can replace it on your terms instead of at the roadside.

Quick, clear readings

Connect the clamps to the battery terminals and six coloured LED lights show the battery's condition in seconds, from good to low.

Works on most car batteries

Designed for 12V car batteries, rated up to 16V.

Handles cold and heat

Works from −20 to 80°C, so it's ready on frosty winter mornings when batteries are most likely to fail.

Pocket sized

Compact enough to keep in the glovebox or toolbox.

Perfect for: checking batteries before winter, used-car inspections, and finding out whether you need a new battery or just a charge.

Common questions

Which batteries does it test? 12V car batteries.
Does it work in the cold? Yes, from −20°C up to 80°C.
Is it hard to use? No. Clip it on and read the coloured lights.

Specifications

For: 12V car batteries · Voltage rating: up to 16V · Operating temperature: −20 to 80°C · Display: 6 LED indicators

Free tracked shipping to the US, UK, EU and Norway. Orders are processed in 1–3 business days, then usually arrive in about 8–10 business days in the US, UK and EU, and around 16 business days in Norway.

Changed your mind? Return unused items within 14 days of delivery. Faulty or damaged items are replaced or refunded. See Shipping & Returns.