lifepo4 battery charger 72vprismatic cells lifepo412 volt lithium battery48v lifepo4 battery pack48v 200ah lithium ion battery south africa80 ah lithiumgrowatt inverter cost 51.2V Batterylifepo4 12v 200ahаккумулятоÑlifepo4 12v 30ahlifepo4 ladegerät 12v test12v 100ah lithium ion battery320ah lifepo4 battery