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Nomadlyweds's avatar
Nomadlyweds
Explorer
Dec 09, 2019

Help: 300Ah AGM battery, substantially decreased performanc

Hi, I am a full-time RVer with a 400W solar setup that charges my 300Ah AGM battery bank (2 x 6V 300Ah AGM batteries). I also have a 2000W inverter. One month ago I left my RV for 4 days at an RV p...
jkwilson's avatar
jkwilson
Explorer III
Dec 09, 2019
Measure each battery individually. 12.75V is on the low side for a fully charged AGM if that was OCV. For example, the Trojan T105 is 6.42V OCV at full charge so you should measure 12.84V. Most brands are that voltage or higher. My guess is you’ll find one lower than the other.

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