Equipment
Tools that help you test, charge, replace or store batteries — organised by job. Specs from manufacturer docs. Buy links are optional and never change the battery answer.
Test a battery
Battery testersQuick good / low / dead checks. They do not measure remaining capacity under real load. · 4 listedCoin / button cell testersQuick checks for CR / LR / SR cells. Open-circuit voltage is not capacity. · 1 listedDigital multimetersMeasure open-circuit voltage accurately. Still not a capacity analyzer. · 3 listedCharger-analyzersCharge, discharge and measure capacity of NiMH AA/AAA. · 1 listed