The Bioenno Power Lithium Iron Phosphate (LiFePO4) Battery Model BLF-12045W is a state of the art 12V 4.5Ah battery. Only marginally larger than the BLF-1203W, our smallest model, this unit is ideal for portable electronics applications where your device has low power consumption and requires a battery which like your device is small, light weight and extremely compact but extended run-time is required. The battery has an integrated PCM (protection circuit module) which provides complete internal cell balancing, complete integrated protection along with integrated charge circuitry. Additionally, like all Bioenno Power batteries with multiple connectors, you can discharge or charge through either connector! This unit has available a 110VAC/220 VAC AC-to-DC charger, that provides 2A with a DC Plug. Please note that this battery should be charged using a LiFePO4 compatible charger, and not a charger for SLA batteries.