House batteries no longer hold a charge very long. Original two 6-volt batteries(2003 LD) that are not maintenance free. Can I replace with one 12 volt battery or two 12 volt batteries? Can I switch to maintenance free batteries?
Replace with the same batteries that are already there, two 6-volt deep-cycle batteries, either lead-acid or AGM.
The batteries MUST be a deep-cycle type, no car batteries.
Upgrading to two 12-volt lithium batteries is common now but expensive.
Larry
Oh gosh, we did replace the house batteries with the same that was there....frightening that our existing batteries were 2013 and 2014 dates. They were 12V wet and we went to AGM 12V ...... now I am concerned....but then again, they have been in use for a long time with no concerns that I know of ....at least till they quit working after 9 yrs. Voltage meter was suggested by a person at Batteries Plus...another concern...or not?
Glad we have a SELD Rally next week and I can also cover these questions..
A voltage meter was suggested by a person at Batteries Plus...another concern...or not?
A volt meter is of limited usefulness, better is a battery monitor that shows the remaining useable capacity of the battery.
The Victron 712 is a popular monitor.
Amazon.com: Victron BMV-712 Battery Monitor : Electronics (https://www.amazon.com/Victron-Energy-MONITOR-VTBMV-S-BMV-712-Battery/dp/B075RTSTKS/ref=sr_1_1?crid=15YNPWTZ6DNRK&keywords=Victron+Energy+BMV-712+Smart+Battery+Monitor&qid=1666336311&qu=eyJxc2MiOiIyLjE4IiwicXNhIjoiMS45MiIsInFzcCI6IjEuNTYifQ%3D%3D&sprefix=victron+energy+bmv-712+smart+battery+monitor%2Caps%2C134&sr=8-1&ufe=app_do%3Aamzn1.fos.f5122f16-c3e8-4386-bf32-63e904010ad0)
Larry