Ecobat 50ah lithium multi purpose battery 12V SERIES LITHIUM-ION BATTERY LiFePO4 Deep Cycle Battery. Drop in replacement for Lead-Acid batteries for a wide range of applications.100% Usable Energy: 100% Depth of Discharge, Fully Utilise Each Charge Wide-Range Certificated: UL, UN38.3, CE, MSDS, etc. Safety First: LiFePO4 Technology Armed with BMS Drop-In Replacement: Simple and Powerful, Connect and Go 77mm Rival Weight: Nearly Half of the Weight of the Lead-Acid Equivalent 10 Years Run Time: 4000 Cycle Life Equivalent To 10-15 Years Service Life Part Number: EBL50 Voltage: 12.8V Capacity: 50Ah / 640Wh Dimensions: Length 229mm x Width 138mm x Height 208mm