Techgeek121

Thanks all for your help.  i found this helpfull also battery test with multimeter.   https://meterreviews.com/how-to-test-a-battery-with-a-multimeter

My old model car was'nt charging battery enough, first i thought it may be battery issue. but i recently replaced my battery with a new one so there are lesser chances of it. i first check online reasons behind no charging of car batteries and found that it may be due to alternator which may be not charging the battery. So i test alternator of my car, i wana know which is valid method of alternator testing?

I found a blog on this  https://www.scienceforums.net/topic/126940-how-to-test-battery-of-a-vehicle/