Forum Discussion
wa8yxm
Oct 29, 2013Explorer III
Do not have charge curves but do have this:
In the manual for my Xantrex Prosine 2.0 they have recommended max charge rates for all sorts of batteries.. For most lead acid batteries there are but two max charge rates.. Both of these are based on the battery's 20 hour amp hour rating.
For GEL type batteries. 25% (For every 100 amp hours you set the charger to max at 25). NOTE I do not suggest you buy gel, a very bad choice
ALL OTHER COMMON LEAD ACID batteries, including Flooded wet cell, Maintenance Free AND AGM!!
30%.
I have seen only one manufacturer suggest fast recharge: Lifeline, and I have visited at one time or another many battery maker web pages. LIFELINE suggests 30% as the MINIMUM initial recharge.. But only LIfeline.
My expierence
I started with a varied collection of batteries
I had some older batteries lying about,a pair of group 27's both of which were OLDER than the motor home, These were maintenance free Marine/Deep cycle types (Well one of 'em was, the other turned out to be Flooded wet but I did not know that)
These were the OLDEST batteries in the RV, the last one was replaced...This morning.
The rig came with a pair of GC-2 size (interstate U-2200) which are still inservice.
A year later I bought a pair of MK-AGM's, which were the FIRST batteries to go, Note that these were babied by a Prosine's charger set to AGM. I combined the banks after I dumped the AGM's.
The U-2200's are going to be the next (And last) to be replaced, Mostly likely next spring. (Soon as I have the cash, but I have other stuff to go first) They still pass load test as best I can test 'em but... JUST barely and the tester is a bit small (I can hit 450 amps with it, Proper test is like 660)
In the manual for my Xantrex Prosine 2.0 they have recommended max charge rates for all sorts of batteries.. For most lead acid batteries there are but two max charge rates.. Both of these are based on the battery's 20 hour amp hour rating.
For GEL type batteries. 25% (For every 100 amp hours you set the charger to max at 25). NOTE I do not suggest you buy gel, a very bad choice
ALL OTHER COMMON LEAD ACID batteries, including Flooded wet cell, Maintenance Free AND AGM!!
30%.
I have seen only one manufacturer suggest fast recharge: Lifeline, and I have visited at one time or another many battery maker web pages. LIFELINE suggests 30% as the MINIMUM initial recharge.. But only LIfeline.
My expierence
I started with a varied collection of batteries
I had some older batteries lying about,a pair of group 27's both of which were OLDER than the motor home, These were maintenance free Marine/Deep cycle types (Well one of 'em was, the other turned out to be Flooded wet but I did not know that)
These were the OLDEST batteries in the RV, the last one was replaced...This morning.
The rig came with a pair of GC-2 size (interstate U-2200) which are still inservice.
A year later I bought a pair of MK-AGM's, which were the FIRST batteries to go, Note that these were babied by a Prosine's charger set to AGM. I combined the banks after I dumped the AGM's.
The U-2200's are going to be the next (And last) to be replaced, Mostly likely next spring. (Soon as I have the cash, but I have other stuff to go first) They still pass load test as best I can test 'em but... JUST barely and the tester is a bit small (I can hit 450 amps with it, Proper test is like 660)
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