len19070 wrote:A starting battery and a deep cycle battery are made to do 2 different things. A start battery is made to discharge a lot of amps for short periods of time while a deep cycle is made to discharge low amps over a long period of time.
Its like compareing a Long distance runner, with one thats in the 100 yard dash.
When buying a deep cycle be certain you don't get a "Marine Deep cycle starting battery". This is a hybrid battery made to do both, but in reality it doesn't do either very well. Sears likes to push these on to people.
Stay away from if you see the words "Start" or "Dual purpose"
In so much as these Hybrids are the same price as the Proper Deep Cycle. It makes sense not to get one. The hybrids will work..but not as long.
I use a standard Camping World $86 Group 27 (27=size. the larger size) Interstate Deep cycle battery. they lasts 5 years. with proper care. And I very seldom go where there is 110V power.
There are all kind of charts and discharge tabels, flow rates you can get bombarded with AND there are better, more costly Batteries out there.
BUT Either the Interstate Group 24 or 27 Standard deep cycle Battery has been the most accepted and proven Deep Cycle battery in the RV industry For years.
Hope this helps
EZ wrote:Don't use a car battery unless you get it for free
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