The remote stops working, so you swap in batteries from the drawer and nothing happens, because those were dead too. Cobalt tells you which cells still have charge, so the flat ones go out and the good ones go back in the drawer.
Why you’ll love it
- Answer In Seconds: The bar graph shows how much charge is left, so you stop guessing which batteries in the drawer are worth keeping.
- Covers The Drawer: It reads AA, AAA, C, D, N, 9V and 1.5V coin cells, so one tester handles the whole household.
- Rechargeables Too: It works with Ni-MH and Ni-Cd rechargeable cells as well as alkaline and zinc-carbon.
- Ready To Use: The coin cell that powers it is already installed, so you can test the first battery straight away.
Details & specs
- Compatible batteries: AA, AAA, C, D, N, 9V (6F22), 1.5V coin cells
- Suitable types: Alkaline, zinc-carbon, Ni-MH, Ni-Cd
- Power supply: 1x 1.55V coin cell, pre-installed
- Display: LCD with 3-color bar graph
- Material: ABS plastic
- Colors: Black, Silver
- Dimensions: Approx. 4.33 x 2.36 x 0.98 in
- Function: Tests battery charge level, not a charger
Good to know
Keep it in the same drawer as the spare batteries so testing takes seconds rather than a hunt through the toolbox. When a toy or remote dies, test the old cells before buying new ones, since one weak battery in a pair is often the only problem.
What’s in the box
- 1 x Cobalt Battery Tester
- 1 x Coin Cell (pre-installed)
Common questions
Can it test coin cells?
Yes, it works with 1.5V coin cells as well as AA, AAA, C, D, N and 9V batteries.
Does the tester need its own power?
Yes, it runs on a 1.55V coin cell, which is already installed when it arrives.
Does it work with rechargeable batteries?
Yes, it reads Ni-MH and Ni-Cd rechargeable cells alongside alkaline and zinc-carbon types.
Can it charge my batteries?
No, it measures the charge level of a battery and does not recharge it.
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