dry cell battery testing

electrician measurement accumulator ammeter ampere anode back-up-power battery cathode charge circuit-board current discharge electric electric-scooters electric-wheelchairs electrified-bicycles electrolyte energy energy-storage engineering equipment hybrid-vehicles industry lab maintenance maintenance-free multimeter plastic power power-source probes rechargeable red repair service storage storage-battery sulfation sulfuric-acid technical-support technician technology testing tools uninterruptable-power-supply ups volt voltage voltmeter