Battery Drain

Also, don't think of the lights as 1/4, 1/2, 3/4, and full. There are two sets of figures on the battery/tank level gauge. Look at the boxed lines that surround the text and the lights. One set is for the tank levels (Empty, 1/3, 2/3, and Full). The other set of markings is for the battery. I'm not home to look at them. The lowest light is for low battery. The middle one is partially charged. The third one is marked g for good. The top one is marked C for Charging. They are a general indicator. A voltmeter is better. A specific gravity refractometer is best, but a bit of overkill. You can remove the caps and using voltmeter probes, measure between cells (carefully, so you don't get acid on you). It will tell if you have a weak cell. You can also check the levels and add DISTILLED water as needed to ensure the electrolyte level is above the plates.

Thank you for posting the conclusion which might help someone else in the future.  It shows that the problems might lie in the minutiae. Now start enjoying the trailer and solar panels.

Following this thread, very informative. I recently took my 2015 Rpod out for a road test of ~10 miles and returning home, noticed the batteries - have two CrossCountry batts wired in series - were not powering much at all, lights very dim or not coming on at all. Plugged into 30 amp shore power, get 13.5 volts. A few days later, unplugged from shore power and took out the multimeter - only reading 5-6 volts per battery. Am I correct in thinking the batteries need to be replaced. Pod purchased a year and a half ago, batteries likely original. Sits in the yard plugged into shore power on the coast in Northern California when not in use...Suggestions welcomed on both battery care and next steps, battery recommendations - likely purchasing a couple new batteries from what I'm reading. Thanks, as always. 

Thanks for the info - yes, 12V and I suspect they're original; date stamps not filled out. Assume you need to check the electrolyte levels on your Interstates or are they sealed as mine are, at least they appear to be, and say 'maintenance free'. Probably time to purchase two new batteries - thx for the suggestions!

If the batteries are 12V, then they must be wired in parallel. Please double check your connections.