Ready to use : No need for preparation, just Plug-and-Play. Voltage – 12.8 V 3 Ah (36W). State of charge indicator integrated. Lighter weight up to 70% than lead acid batteries. Multi-positioning mounting. No acid, no leakage risk, no heavy metal, no toxic. Extensive cycle life over 2000 cycles. Heat temperature resistance up to 446F. Fast charging capabilities. Very low self-discharge. Impressive cold cranking performance. Brass terminals. Silicone sealant for excellent sealing performance.