6.4 Volt 4.5 ah LiFePO4 Lithium Iron Phosphate Battery w/ BMS replaces 6v UB645, PS-640, SLA4-6, SLA0905, BSL0905, WKA6-5F, ES4-6, BP5-6, 24-1002, PE6-4, PE6V4, HP4-6, PE6V4.5, PE6V4.5F1, CP640, CP645, BP4-6, BP4.5-6, LC-R064R2P, LC-RB064P, LCR6V4BP, NP4-6, 6CE4, 6CE5, CA640, CA645, GP640, GP645