arduino solar charge controller

Thread Starter

afm707

Joined Oct 24, 2016
20
my project is to use a 5 watt solar panel and arduino(nano) to charge group of batteries with different voltages (between 1,5 to 5 volt)

how to auto detect battery voltage and charge it
without overcharging
 

wayneh

Joined Sep 9, 2010
16,102
There are dedicated IC's to control the charge of batteries. Some are limited to a single battery chemistry (which dictates the charging strategy) but I've seen some that can be programmed for different battery chemistries. If you haven't seen it yet, I suggest a visit to the Battery University.

Detecting voltage is a poor strategy unless you are charging lead-acid.

If you want a do-it-yourself solution, you should limit yourself to a single battery type. Otherwise it will be very complex.
 

Thread Starter

afm707

Joined Oct 24, 2016
20
There are dedicated IC's to control the charge of batteries. Some are limited to a single battery chemistry (which dictates the charging strategy) but I've seen some that can be programmed for different battery chemistries. If you haven't seen it yet, I suggest a visit to the Battery University.

Detecting voltage is a poor strategy unless you are charging lead-acid.

If you want a do-it-yourself solution, you should limit yourself to a single battery type. Otherwise it will be very complex.
ok no problem i want to charge a single type but with different voltages
 
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