Victron Energy Victron Energy LiFePO4 12.8V/200Ah Smart Battery Kit

This system is custom designed by Northern Arizona Wind and Sun using the newest available equipment. The kit is perfect for all 12 volt battery systems, RV and marine applications. It comes with almost everything you need for a complete battery system. In several applications (especially off-grid solar and/or wind), energy efficiency can be of crucial importance. The round trip energy efficiency (discharge from 100% to 0% and back to 100% charged) of the average lead-acid battery is 80%. The round trip energy efficiency of a LFP battery is 92%.