Originally Posted by campersRus
Sorry it is Group 27.
Thanks folks for the info. I didn't believe you could replace one for one with 6V's...just had to check my sanity. I will replace with 4 GC2 series batteries.
In another thread I posted about those who think all batteries are the same...
Group 27 is just shy of 100 amp hours, Let's round and say you have 400 amp hours there.. Of course these are Marine/Deep cycle so you can only use about 100 before serious damage happens to the battery life.
You are upgrading to 4 GC-2 and yes that is an upgrade
230 amp hours per pair that's 460 amp hours total and as these are DEEP CYCLE (no mention of marine) you can use up to HALF that capacity without serious damage or 230 amp hours.
That, is a major upgrade. Good plan you will be happy.
NOTE: make sure the charger settings on the inverter/charger or your converter's settings (Whichever applies) are proper.. My GC-2's lasted 9 years with abuse (Occasional discharged to like 20% state of charge) DEEP CYCLE batteries recover better when that happens as opposed to other types.