The Lithonia ELR4 unit calles for the PS-6120FP replacement battery. The PS-6120FP is not the OEM Lithonia ELR4 Battery, however it is 100% compatible and is guaranteed to meet or exceed the standard OEM Lithonia ELR4 battery specifications

 

The Lithonia ELR4 battery is shipped fully charged and tested to ensure you the highest quality possible and comes standard with High-Tech Battery Solution's unbeatable two year no-hassle warranty. All sealed lead acid batteries purchased from High-Tech Battery Solutions are designed specifically for the deep-cycle stand by use associated with all Lithonia battery backup systems. Our batteries are of the highest quality on the market and are guaranteed to perform to or surpass OEM specifications.