Coach Batteries

The friendliest place on the web for anyone with an RV or an interest in RVing!
If you have answers, please help by responding to the unanswered posts.

ChipSmith

Well-known member
Joined
Aug 20, 2018
Posts
50
Location
Mid-Michigan
Need advice! While dry camping in North Michigan, the furnace fan died in the middle of the night! Tried to start the generator, no go. Started the engine and got generator running. I think I have to replace the coach battery (80min Reserve Capacity, and older). I can find a replacement that is rated at 190 minutes, but I wonder if I should put in two 190?s in series. Will I gain reserve time or just be spending money?
 

Gary RV_Wizard

Site Team
Joined
Feb 2, 2005
Posts
76,153
Location
West Palm Beach, FL
RC (Reserve Capacity) is a reliable measure. A 190 will last more than 2x an 80, and two 190's will double that again.  More is better if you are frequently without shore power.

Are you sure that battery is only 80 RC?    80 would be more typically an AH (amp-hour) rating and the common Group 24 12v battery will have an RC around 140. The same battery AH rating would be about 80.  You can't compare RC value to AH values - they are computed differently.
 

Kevin Means

Site Team
Joined
Aug 3, 2010
Posts
5,050
Location
Lakeside, California
Hi Chip. For those of us who boondock a lot, it's hard to imagine having too much battery capacity. So if you envision doing much boondocking, yes, I'd recommend increasing your battery capacity.

Kev
 

ChipSmith

Well-known member
Joined
Aug 20, 2018
Posts
50
Location
Mid-Michigan
Thanx guys. I?m not sure on the 80 rating. I sure do think it is a good idea to up my battery capacity, even though our ?boondocking? usually consists of a casino parking lot! Thanx again!
 
Top Bottom