b atterie life

ford coupe wrote:
usually plugged in 24/7 when parked at house,if not plugged in slides don't want to work,lights don't come on any thing 12 volt won't work unless plugged into shore power or plugged into tow vehicle. batteries taken out every winter & stored in basement of house after charging.

Sounds like there is no connection between batteries and RV. It does seem that the converter is working fine.

What is voltage at batteries when RV is unplugged?
What is voltage at batteries when RV is plugged in?

Some possibilities;
Disconnect switch off/open.
Reverse polarity fuses burnt/open.
Fuse or breaker at batteries burnt/open.
Corroded or loose connections at batteries, ground, or converter.

usually plugged in 24/7 when parked at house,if not plugged in slides don't want to work,lights don't come on any thing 12 volt won't work unless plugged into shore power or plugged into tow vehicle. batteries taken out every winter & stored in basement of house after charging.

I usually get about 5 years on a set of 4 deep cycle 12v batteries. The 5th wheel is 20 years old and I'm on my 4th set of batteries.

Our 5th wheel is stored unplugged for most of the year(batteries fully charged when parked and batteries disconnected). We use it about once per month for weekend trips and for 3-4 months setup and plugged in at an RV resort during the summer.

I always count on seven years or more.

Most batteries die of abuse and neglect, not old age.

Describe in detail the problems you are having. There are lots of smart people on here but details are needed.

1 to 10 years depending on the quality of your converter/charger and the quality of ... well... YOU.

Took me a few years to learn all the facts.. I used to get new batteries every spring, but once I studied and learned.. My last set lasted

AGM's. 5 years
Flooded wet 9 years
Maintenance free: not really sure but about 9 years is close (They were older than the RV, RV is 9, just put new GC-2's in it last month, Replaced chassis batery a month or so before that.. Got AGM's in 2006 replaced in 2011, they were actually dead before that,, One of the reasons I'm not a fan of AGM's.)

Converter (This is important) is a Progressive Dynamics Intella power 9180 with wizard

Battery bank (Current) is two GC-2 (flooded wet) and I think 3 Group 29 Maintenance free in parallel . I have room for one more G-29 if I wish, used to have 2 G-31 AGMs and a 2 G-29s (MF) which were older than the RV.

One Inverter/converter (converter normally disabled) Prosine 2.0

Chassis battery is a group 78

I do check fluid level in the GC2s at least 4 times a year,, New I add about annually, as they age the frequency of add increases.. DISTILLED WATER only.

In the old days I used an automotive type charger on a Maintenance Free Marine/Deep cycle with a trailer and had to put new batteries in annually. Finally learned how to keep em lasting longer.. The original G-29's were from teh trailer and from a home emergency power pack.

3 to 4 years is average if you keep them maintained. If not a year or less.