7 4v battery pack disassembly diagram
240KW/400KW industrial rooftop - commercial rooftop - home rooftop, solar power generation system.
The battery charger circuit is designed for 7.4V lithium battery pack (two 18650 in Series) but the circuit can be easily modified to fit in lower or slightly higher battery Packs like to build 3.7 lithium battery charger or 12v lithium ion battery Charger. It is using LM317 and Arduino, charge current 800mA (CC) and charge voltage 8.4 (CV).