This is how to modify old Lead-acid battery charger or convert power supply to battery charger in automatic. To protect over charging by CA723 and power SCR
Include : Nickel metal hydride– • Nicad– • Li-on battery– • Lead acid– • Dry cell–
• Best Automatic battery charger • Automatic Ni-MH battery
• Backup battery systems • 6V battery • 12V battery charger–
It can charge any size of the Gel cell batteries and extend the life of the Gel Cell battery. While the circuit is running, the LED indicates charging.
Modify cheap mobile phone charger inside is simple DC switching regulator circuit and can apply many ways, such as DC power supply