View Single Post
Old 03-18-2017, 09:07 PM
Aaron's Avatar
Aaron Aaron is offline
Co-Founder & Moderator
Join Date: Feb 2007
Location: Washington State
Posts: 10,946
discharge deeper

Originally Posted by bryanx78 View Post
i'm trying to discharge my battery with a 3 watt lamp, but under load, voltage drop to 11.9v in few seconds (but without load it return to about 12.4v in few seconds).
Do you think my battery is warn out?
If it is AMG and has an amp hour rating, it is probably deep cycle and you can draw it down to 10.5 volts. Keep that 3 watt lamp on there and discharge it down to 10.5 v then charge back up to 14.8 v and then put the lamp on again. Does it bottom out again? I'd repeat that a few times.
Aaron Murakami

Reply With Quote