Homemade Solar Panel Battery Charger

Solder the diode to the red wire on the solar panel with the negative side of the diode marked black.

Homemade solar panel battery charger.

Before delving into the following concepts you can probably try this super easy solar battery charger which will ensure safe and guaranteed charging of a small 12v 7 ah battery through a small solar panel. 1n4007 diodes 3nos. This diode is rated at forward current of 1a with peak reverse voltage rating of 1000v. Below are the links to the prod.

As a beginner s solar project i have designed a very simple solar battery charger to charge 18650 li ion batteries. From the batteries you can run any mains appliances using appropriate inverters. Ic 7812 1no. 2k2 1 4 watt resistor 1no.

Setup an array of solar panels on rooftop connect them to a solar charge controller and charge the batteries. Twist the black wire on the battery holder to the black wire on the solar panel so the wires run. Solar panel 20v 1 amp. Using your soldering iron solder the charge circuit to the solar panel.

These boards gets. Using your glue gun glue the charger to the end of the solar panel. Make sure that your usb port is not sticking out from the panel or touching any leads. How the tp4056 work.

The usb charging circuit converts dc power. Looking at this board we can see that it has the tp4056 chip along with few other.