Originally Posted by 427creston
Thanks Cam , I thought that would be the answer to my question ,so thanks again for that , another question what would be the best type? that will fit in the space of a Sunseeker step, I have used deep cycle in other motor homes but they have had more height .
Well...the batteries under your steps are likely either Group 27 or Group 24 size. If you cant see a 24 or 27 printed on the battery the next choice is to measure your EXISTING batteries to determine what they are and while you are there...see how much extra room in height, width or depth you may have available. The approximate (within 1/4") dimensions of the three most popular sizes of 12V RV deep cycle batteries are:
Group31...13x 6.75 x9.4"
...as you can see... the height should not be a problem and only the length varies. Squeeze in the highest group number deep cycle that will fit in your space...typically...75/90-95/100-105 amp hours respectively in these sizes per battery.
The other choice is a pair of 6V deep cycle batteries wired in series to give you a "single"big 12V battery. Dimensions on these are:
10.3x7.2x10.8" so you need more height & a little more width for these.
If you boondock a lot...a premium deep cycle battery will pay for itself if maintained...Here's the whole Trojan line with complete specs so you can pick what fits for you if you go the premium route.
If you don't boondock much, a conventional deep cycle will suit fine....I like the Deka brand myself (East Penn MFR.) and they make for a lot of other labels...almost always you will see a model number starting with DP or DC and then the group size if it is a Deka. i.e. DC27 = deep cycle group 27
...avoid the DP dual purpose designation...and with any other batteries if you can't get a 20 hour amp spec...keep walking. Reserve Capacity, CCa amps and any reference on the label
to starting is NOT a true deep cycle battery.
Hope this helps.