Making A Solar Panel Trickle Charger For Aa Batteries

The circuit of a simple lm338 solar battery charger is shown below using the ic lm338.

Making a solar panel trickle charger for aa batteries.

To build a solar battery charger you need several things as well as have several tools on hand. Parts a clear water proof container. I also have solar charger that clips on a backpack and a small panel i hooked up to trickle charge a 12 volt battery that i can use to charge all types of equipment. If you re like me and you like to spend a lot of time in the backcountry this means you don t have any way to charge you devices.

I use rechargeable aa aaa for headlamps and led flashlights. Build a simple solar powered battery charger for ni mh batteries. Divide the wattage of the solar panel by the voltage of the battery to get the number of amps your charge connector needs to handle. To charge a battery with a solar panel connect a charge connector to the solar panel.

You could buy a solar powered battery charger but it s cheaper and more fun to make one yourself. But thanks to the modern highly versatile chips like the lm 338 and lm 317 which can handle the above situations very effectively making the charging process of all rechargeable batteries through a solar panel very safe and desirable. Diy solar battery charger.