Battery, Battery Chemistry Nickel Cadmium, Battery Capacity 2.5 Ah, Compatible with Series PG, Compatible with Product Type Emergency Lights, Recharge Time 168 hr, Voltage 8.4 V, Standards UL 924, Rated Life 5 yr, White Housing Color, Compatible Mfr. Model Number PGB; PGP; PGW; PGZ, Maximum Operating Temperature 113 Degrees F, Minimum Operating Temperature 32 Degrees F, 6 1/2 to 7 in Lead Length, Overall Depth 1 1/4 in, Overall Height 2 1/4 in, Overall Width 7 1/4 in WARNING: This product can expose you to chemicals including Nickel (Metallic), which is known to the State of California to cause cancer, and Cadmium, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. -