BFL13 wrote:
We know about marine/RV batts being not so good at that compared with "real" deep- cycle batts like T-105 6v or T-1275 12v batts.
First, if the battery advertises "cold cranking amp" (CCA) or "marine cranking amps" (MCA) I am immediately suspicious.
Second, for similar sized batteries, compare the Ah @ 20 hr rating to the T-105 and T-1275.
Third, for similar sized batteries, compare their weight. True deep cycle will always weigh more
(more lead).
When you get to "odd" sized, you are on your own !
In general, "You get what you pay for !" FYI - Both the T-105 and T-1275 are available as AGM.
