Fellow RVers,

I find that I am in need of a new 12V battery for the trailer.  It has been a long time since I have purchased one and was wondering what brands (interstate, die hard, and etc) of batteries you have had good performance with lately.  I just would like to make sure I spend my dollars wisely.

Thank you and have a great day.

Don't know how much room you have but when my 12 volt dies it will be replaced by 2 6volt ,deep cell, Trojan batteries.

How careful you have to be in choosing a replacement, has a lot to do with how often you expect to boondock and therefor how hard you will be using the batteries. We don't boondock often and our Interstate 6 volts are still good after 4 years of fulltiming. Definitely think of 2 deep cycle 6's rather than a single 12 if you have the room.

You must have to be very careful when choosing the replacement battery because earlier when I got the replacement battery fully packed but dead.I put it for charging it for 2 hours and it showed me fully charged but after an hour it got discharged.But luckily I got it replaced by the new one which is good.

I've had good luck with Die Hards. I tried the ones Walmart carry and seemed to have to replace every 2 years. The Die Hards will go 4 years plus. I get the marine/rv deep cycle with the highest rated cranking amps and reserve minutes available in the size I need. Like others, my next replacement will be to go with 6 volt AGM batteries.

Question: Would there be any damage to the 6-volt deep cycle golf cart batteries caused by the high current demand on starting of the on-board generator? Can a pair of 6 volts in series handle starting without damage, or shorting the life of the batteries?

JG my genie starts great with my 2 6v deep cycles. (onan 5500....batteries are Trojan...T-105 I think)

-- Edited by igotjam on Friday 2nd of July 2010 08:46:30 PM