Q: BATTERY QUANDARY
Dear Boat Doc, do some marine batteries rate higher than others? I’ve been happy with Interstate so far, but I’ve discovered that I can save about $30 on a Duracell or DieHard series 24m for my ’toon with a trolling motor.
Thank you for your thoughts.
Bob Davis Via email
A:Hi Mr. Davis. The specs for the battery-cranking amps, amp-hours, etc. are one measure used to compare batteries. Another is the physical internal construction. Boats have no shock absorbers, and batteries are subject to damage and shortened life due to breaking up internally due to pounding. Battery-makers usually describe the structure of their batteries on their websites.
You’ve mentioned the price — also compare the warranty policies of the brands you are considering.
Finally, what about service? Is one brand represented by a retailer who will be glad to help you, accept a return, or take your old battery in trade?