As compared to a g25 which has a reserve capacity of 100 @25.

So a g65 is 130@25, roughly 65 amp hours, so at a .040 amp draw you have 1625 hours before discharged state or 67 days.

Compared to a g25 of 100@25, roughly 50 amp hours. so at .040 you get 1250 ... Login to read more.