NiMH/NiCD Car Charger, Silver/Black Among the highest capacity battery cells, these NiMH batteries can be charged up to 1,000 times. Designed for today’s high-tech, high-drain devices. The compact charger works for both NiMH and NiCD rechargeable batteries. Charges four AA, four AAA or two 9 volt batteries at a time. Charge time for NiMH batteries is five hours. Charge time for NiCD batteries is three hours. Signal lights notify when batteries have been fully charged.