Thai wrote:
I'd like to add a 2nd battery to our new TT.
Currently it is (came with trailer):
Group 24
550 CCA
675 CA
140 RC
Since you're in Canada, Ontario specifically, I'm going to guess that what you have is a Deka DP24 Marine Master flooded battery as these specs you've quoted match exactly. These batteries are manufactured by East Penn and here in Canada are marketed by RV Care dealers as a Traveler's Choice battery. It's unfortunate at the time you purchased this trailer that you didn't specify a DC24 which is 20 HR rated @ 75 amps rather than 65 amps. Further you could have specified a DC27 for hardly any more $$ or better still a DC31 which is 20 HR rated @ 105 amps. Adding a second DC31 would then have given you a 20 HR rating of 210 amps which is in the same territory as a pair of flooded GC-2 6 volt batts in series. Since your trailer is new it would be worth asking your dealer if he would take back the DP24 knowing it's not yet been used (I assume) if he could sell you a pair of Group 31s.
