Emergency rechargeable NiCad replacement batteries for Lithonia Lighting emergency fixtures only|We cannot guarantee the charger board in another manufacturer's product will properly charge this Lithonia Lighting battery|Sealed, maintenance-free nickel-cadmium battery delivers the 90 min capacity to emergency lamps|Compatible with Lithonia Lighting emergency lighting units ELM2 LED and EU2C|The recommended temperature range is 50 to 104 deg Fahrenheit, optimum ambient temperature range where the unit will provide capacity for 90 min; higher and lower temperatures affect life and capacity|Low-voltage disconnect prevents excessively deep discharge that can permanently damage the battery|Typical shelf life is 3 years at 77 deg Fahrenheit with a total typical life of 7 to 9 years|Quick connect plug for easy replacement|Product is a battery and used as battery back-up in emergency lighting units