Replacement Battery, Battery Chemistry Nickel Cadmium, Battery Capacity 600 mAh, Voltage 7.2 V, Standards UL,UL 924.NFPA 101.NEC.OSHA, Rated Life 8 yr, Compatible Mfr. Model Number ECHL1RWW, ECHL2RWW, ERXL1WGCS, ERXL1WRCR, EVRXL2GWWU, EVRXL2RWWU, EXFL2GWWU, EXFL2RBB-U, EXFL2RWWU, Maximum Operating Temperature 158 Degrees F, Minimum Operating Temperature -4 Degrees F, Overall Depth 4 in, Overall Height 1 3/4 in, Overall Width 3/4 in