Battery Charging From Solar Panel Circuit

In this post we discuss elaborately an automatic solar charger circuit using a single transistor relay circuit.

Battery charging from solar panel circuit.

Solar battery charger circuit principle. By adjusting its adjust pin output voltage and current can be. First i used the battery to power the lamp and it dropped to 8v. Simple charger using a battery and solar panel a solar panel can certainly be applied to directly charge a battery with virtually no other elements.

This solar panel power switch circuit replaces the diode and connects the panel to battery through a relay contact. I have added in the brown wire as brown line the diode as a blue line i have also added in the ve ve makers for the battery. I think the charging works fine because from 8v the circuit was able to charge the battery to 13v. 12 volt dc is available from the panel to charge the battery.

To charge the high capacity of a nicad battery or battery pack it is recommended to charge the battery at the rate listed on the battery label. The output voltage and current are regulated by adjusting the adjust pin of lm317 voltage regulator. I used a 100w solar panel to charge the 40ah battery. I finally implemented the above circuit.

The solar panel consists of solar cells each rated at 1 2 volts. Automatic solar charger circuit single transistor. Circuit diagram of solar panel battery charger step 6 from below you can see the soldered connections how they run along the copper tracks. When the power supply voltage is too low the relay is not on so the battery is not connected to the solar panel.

When the voltage is high enough to engage the relay and the ldr receives enough light in order to open t1 the relay. Charging current passes through d1 to the voltage regulator ic lm 317. The charging current passes to lm317 voltage regulator through the diode d1. When you match the battery to the solar cell all you need for a charging circuit is a diode.