lifepo4 batterie 280ahrechargeable lifepo4solar battery lithiumagm vs lifepo4 batterygrowatt inverter 6kw LiFePO4 Battery200ah lifepo4 batterysp2000 growatt32v lifepo4 battery high gereddiy lithium batteriesgrowatt charge controller compatible LiFePO4 Batterylifepo4 full voltage24v 300ah lifepo4 battery