I have a 20V 2.25A laptop power supply that i want to split 3 ways to charge 3 X NiMH battery packs simultaneously (5000,2000,2000 MAh each @ 7.2V).
My plan is to use 3 of these XL-4015 dc to dc step down modules to regulate the voltage and amperage. My question is how can i stop the battery from charging when its full without me having to monitor them.
I'm a hobbyist not a pro. so don't get too technical with me :-)