Battery maintenance

i have heard differing opinions on how to deal with the 12v battery on the r-Pod when not in use.  One dealer said to remove it and charge it manually about once a month.  Another said to just keep the 30Amp cord with the 115V adapter on the end and keep it plugged up.  This way, the onboard inverter would keep it at a full charge without overcharging.  Anybody have any good advice?

Several owners that can keep it plugged in do just that. I cannot so I remove the battery and keep it on a trickle charge that has a desulfinate maintenance function. 

If you leave it unplugged, make sure you disconnect the battery from the pod.  Then reconnect it before charging overnight every 30 days.  But, if you can leave it plugged in, that is easier.

+1 on Teckntrek's advice.  Our batteries were purchased March 2011 and are still going strong.  We dry camp a lot and take them down to 33-40% SOC before switching to the other battery.  They are group size 24  12v deep cycle.  I store our pod in our old horse barn and take both batteries out and keep them in our unheated garage.  I check the water level at least 2x/year  while the pod is hibernating during the winter  will trickle charge the batteries 2x during the winter.  Once in November, after our last campout and then again in April.  It usually takes 1 day/battery on 2 amp trickle charge to bring it to full.