October 25, 2021, 07:32 PM
eltonrDid I Ruin my RV Batteries? Or, I just paid the Stupid/ Lazy Tax
Check with your battery supplier. Group 24 batteries are the smallest (cheapest) amp hour batteries in this size (24).
Most group 27 and possibly 31, will fit in the same “battery box” look for the most “amp hour” rating on the battery, not cold cranking amps.
Group 24 < 78 AH, group 31 > 108 AH. This rating is how long the battery will last on constant discharge. Ie. 1 amp draw for 78 hours, or 20 amp draw for 4 hours
YMMV, depending on load
John
October 25, 2021, 07:44 PM
ugeestaYeah, I killed my batteries this year too. They were cheap deep cycle batters from Camping World that I got last year for my “troubles” with their service department. They would not take a charge.
Figured that out when we pulled up to hunting camp. It was going to be 20 degrees that night so back into town I went. Luckily Napa stayed open long enough so I could replace them.
Now the trailer is winterized and the new batteries are in the basement to be cared for over the winter
October 25, 2021, 08:01 PM
trapper189Yes, if you switch to an Li type battery such as LiFePo4, you will need to change your inverter/charger.
October 25, 2021, 08:15 PM
armoredLithium batteries are not meant for starting engines and need a very specific type of charging. They also need a battery management protection to help protect them from charging in cold weather, a battery heater is required to avoid permanent damage in cold weather charging.
If your batteries are drawn way down you need a "dumb" charger to charge or start to charge them. A modern "smart" charger will not try to charge a totally dead battery.
If you don't have access to a "dumb" charger you can get the dead batteries started by charging with jumper cables until you see the voltage come up to 12+volts. If they don't come up, there goners.