12V 300ah smart bms lithium iron ion phosphate battery pack 3.2v 100ah prismatic cells diy 12.8v 300ah lifepo4 batteries akku

12V 300ah smart bms lithium iron ion phosphate battery pack 3.2v 100ah prismatic cells diy 12.8v 300ah lifepo4 batteries akku

3.2v lifepo4 battery cell with 18650 battery battery lithium titanate battery lto