Need a replacement battery for your emergency lights? Check out the Dantona CUSTOM-332 Rechargeable Replacement Battery! This replacement 4.8 -volt, 800 mAh Nickel Cadmium (NiCd) battery is used in the Simkar 6600012 Emergency Lighting and meets or exceeds original manufacturer specifications.. 4.8 volts, 800 mAh. Long-lasting. Rechargeable