0.0 amps at 15.1v on an AGM
I've been using the 0.5% of capacity at 14.46v as an indicator as to when to stop charging my Northstar group 27 AGM. But I have also let voltage to stay at 14.46 overnight, and the Ammeter reads 0...
Forum Discussion
Since 2009 I have been running my wet cells down to their 50% charge and recharging back up to the 90% charge state for about 12 days or so before I start seeing the daily performance start dropping off.
I base the bad performance on draining around 20AMPS continuous for about 5 hours each day along with the usual parasitic drain all day long. Doing this I make it until 8AM each morning before re-charging for three hours using 14.4VDC. If I do this 50%-90% charge state routine more than 12 or so times without doing a full 100% charge state using 14.4VDC I can only last until around 10PM each night before the batteries drop down to their 50% charge state (Around 12.0VDC).
After recharging to a full 100% which takes around 11-12 hours using 14.4VDC I can do this same routine all over again and make it thru the whole night for another 12 days or so.
My Battery bank was installed in late 2008. I am just now starting to see the overall performance being harder to maintain doing the 50%-90% charge state recharge each day meaning I need to do the full 100% charge state recharge more frequent...
Time for new batteries I suspect...
Roy Ken
I base the bad performance on draining around 20AMPS continuous for about 5 hours each day along with the usual parasitic drain all day long. Doing this I make it until 8AM each morning before re-charging for three hours using 14.4VDC. If I do this 50%-90% charge state routine more than 12 or so times without doing a full 100% charge state using 14.4VDC I can only last until around 10PM each night before the batteries drop down to their 50% charge state (Around 12.0VDC).
After recharging to a full 100% which takes around 11-12 hours using 14.4VDC I can do this same routine all over again and make it thru the whole night for another 12 days or so.
My Battery bank was installed in late 2008. I am just now starting to see the overall performance being harder to maintain doing the 50%-90% charge state recharge each day meaning I need to do the full 100% charge state recharge more frequent...
Time for new batteries I suspect...
Roy Ken
