Posts: 2753
Location: Mauston, Wisconsin | Doug- I'd advise agaist it- your trolling battery and cranking battery are usually different type- one is designed for long/deep low rate discharge (trolling) and cranking is designed for fast high rate discharge. Plus the cable would have to be rated for the full current not just the charging current and the engine noise can interfere with electronics like depth finders or trolling motors w/electronic controls.. There are ways to do this with a switch, right hardware, etc. I believe you may be able to find a kit I'd probably consult with a pro boat rigger before going off the deep end.
As Martha says- "it's a good thing" to charge your batteries separately.
If you're worried about the cranking battery during storage- get another charger for it. On average in storage, lead-acid batteries need a refresh charge every 60-90 days. It's also not a good thing to leave them on constant float charge- without some very special charging controls- even then this increases grid corrosion and causes loss of capacity and life. Your batteries will last longer if you charge them periodically (every 60-90 days) while in storage.
Al |
