group 24 & 27 batteries ?

WFCO I brought the Lifeline down to 12.55 volts, night before last, and the WFCO immediately climbed to 14.95 volts. I let it stay there for five minutes and finally came to the conclusion it's about as trustworthy as letting Charlie Manson loose in a knife factory. The 14.95 value was verified on instruments 2, 3 and 4.

richy2 wrote:
I seldom dry camp. I would most likely get an Interstate, the same brand that came with trailer. I always have used group 27 and got about three years average out of them.

My G27 Interstate is now going into it's 8th year and can still achieve a full charge. I'm almost finished rearranging my trailer tongue, moving the tanks aft with the battery box directly in front of them and although measurements show I could mount a pair of 6 volts I'm going to stick with my current G27 for the time being. A pair of 6 volt GC-2s would certainly offer far more reserve capacity but one thing many fail to mention when recommending them is how you're going to properly recharge them, such that you do get the most longevity out of them. Fact is, there are an awful lot of trailers these days equipped with the ubiquitous WFCO converter which does a pretty poor job, often not even going into it's bulk charging rate @ 14.4 volts. I've owned several and I know none of them ever have ... not much of an issue for me since we don't dry camp often but certainly a drawback for anyone investing in a pair of GC-2s that demand proper care if you're going to get the most out of them. In your case I think you've made the right choice.

100w of solar could easily double the battery life.

I tried yesterday
No problem connecting a 24 and a 27 together but you get what, a total of around 170 amp hours of MARINE/deep cycle power.

Try a pair of GC-2 Golf car batteries (six volt in series) and you get between 210 and 230 amp-hours of TRUE DEEP CYCLE battery.

This means you can use half of it, instead of only about 30 percent, and if you accidently use more there is a far greater chance of recovery.

Happy Camping To You!

Thanks for all the good information. I seldom dry camp. I would most likely get an Interstate, the same brand that came with trailer.
I always have used group 27 and got about three years average out of them.

richy2 wrote:
Any problem combining the two?

No

Will you choose the 27 based on identical manufacturers?

What are your plans for dry camping? Trying to go for extended periods with no generator or minimize how often you have to run a generator? We have been dry camping (typically 2 weeeks at a time)for years with a single quality 12V SCS200 115 AH (Gr 27)Trojan battery but we run our EU1000 generator every morning to keep the battery nearly fully charged. Our power needs are modest since we do not need an inverter but only need power for vent fans (or furnace in the morning depending on the season), water pump, trailer electronic controls and LED lighting.

I agree you should have no issues with paralleling two batteries (if you really need the additional capacity)as long as both are in good condition.

If you add a new 27 to a nearly new 24, you will more than double your AH capacity. They will charge and discharge equally, and you will never notice any decrease in longevity.
I don't know where all the false information above came from, but it sure dint come from actual experience !