I 'm charging a 12v lead acid battery with a solar panel and reading the battery voltage with a microcontroller(the micro uses a mosfet on the high side for constant voltage). the problem i'm having is when the battery is charging at arount 4-6 amps the micro thinks the battery voltage is about 0.3v higher than at the actual battery terminals and gets worse with larger currents. when not charging the micro reads the battery voltage exactly. Can someone give me some idea how to remotely sense the battery voltage at the battery terminals that wont be affected by the charge current?
Thanks for any help!
Jamie
Thanks for any help!
Jamie