Charge Controller
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How to make charge controller for solar panel to batteries?
I don't think you'll get a straight answer here ... If you do, beware. It's much to complicated of a topic to address in a forum like this. It depends on the battery type, the voltage and current of your panel, etc. There are may schemes that can be used depending on whether you are charging lead acid, NiMH, Lithium (can be dangerous if done wrong). If your panel has a lower voltage than your battery, you need a boost converter. If the panel has a high voltage, you need a buck converter. These types of supplies/chargers are tricky to design and build correctly even for experienced engineers.
Having said all that, if your panel has a voltage slightly higher than 12V (like 14V) and your battery is a 12V lead acid type, you might be able to just get by with a direct hookup using a reverse blocking diode so the battery does not back feed the solar cells when shaded.
