Solar Panel Battery Charge Controller Circuit

An inverter converts the battery dc to ac.

Solar panel battery charge controller circuit.

16w includes power dissipation of d3 typical dropout voltage. 3 p channel mosfet switch circuit. High current low drop solar charger circuit. 18 to 20v output voltage range.

This low drop solar panel charger circuit is going to be used to accomplish optimum current from a solar panel system whilst charging a conventional lead acid 12 volt battery. Solar charge controller specifications. 50w 4a 12v nominal open circuit voltage. 7 to 14v adjustable not recommended for 6v applications max power dissipation.

It s a 555 based simple circuits the charge the battery when the battery charge goes below the lower limits and stop charging when the battery reaches it s upper limit voltage. The battery voltage is monitored by a controller that turns on the switch circuit to charge off when the battery is charged. We have a solar panel with internal blocking diode some kind of switching circuit and the battery to be charged. The above explained solar charger circuit using transistors and with auto cut offs can be used for any small scale solar controller applications such as for charging cellphone batteries or other forms of li ion batteries safely.