Volts of power per individual battery cell which is a size comparison from a AA battery and a C battery.
Hart 20V 6Ah Lithium Ion Battery Pack NEW SEALED
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IQV20 Series 20V High Capacity x5.0 Lithium-Ion Battery IRC-BL2022 Brand New!
Lincoln Lubrication 1870 Lithium Ion Battery Charger, 20V
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