Replacement battery fits 5 ERC compatible models. Specifications: 4000mAh, 3.6V, Ni-Cd. Compatible with: LFE 03B, LFE 05B, LFE 05S, COMBITRONIC emergency lighting system, Arts SD S3 NT U C75. Replaces: ERC 098017/960, ERC 803169, Arts 803169. ERC replacement battery designed for Emergency Lighting devices. Engineered for consistent power output across many charge cycles.