Forum Discussion
full_mosey
Sep 04, 2013Explorer
SkiMore wrote:
...
I think we should consider AGMs also. That way nobody needs to check the levels. The batteries are on a shelf about 6 feet off the floor so weight is an issue. The shelf is strong, but I don't want to lift anything much heavier than the GC2s up there. Are there suitable AGMs that are less than 75 lbs each?
No need for 4 x 6V GCs to get the Amp draw you need for the MWO. You can get 24V and adequate AHs for MWO runs from 2 x 12V 100AH AGMs in series. 100AH AGMs weigh 65lbs. If you need more MWO time then 3 x 100AH will give you a 300AH bank. No need to build the battery pack in 220AH/130lb increments.
AGMs give up Amps without the Volt drop you get from GCs. In a capacity test, I pulled 78A from my 79AH 53lb Deka AGM for 7 minutes and the Volts held at 11.6, so no inverter shutdown. Within minutes, the Volts bounced back to 12.37. That is 100% of AHs. A pair of 100AH AGMs will weigh 130lbs.
With AGM, you get a better balanced bank size for both high and low draws.
HTH;
John
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,343 PostsLatest Activity: Dec 16, 2025