heading north for a fishing trip, and have a fishfinder that runs on a 12v 9 amp hr battery.... and was wondering, rather than getting a second backup battery, was wondering if using a higher capacity 12v motorcycle battery might work, as a longer term powering option. anyone have experience with anything like this?? at times, ill be out on the lake for over 24 hours, and dont want to run out of battery power! i would think that just like as with taping gear, the higher capacity, the better, but just trying to make sure i dont try to push too much power to my device, (and fry it) !!
beyond that, anyone have recommendations on a goodquality, yet reasonably priced, 12v sla battery that would be over 9 amp hr??
thanks in advance, you tech heads!!