I am getting ready to buy a back-up battery and battery case for a 13-foot
aluminum boat that I have. The battery will be for the electric trolling
motor. The reason for the second battery is for use if the first battery
starts to run low and so that I will be sure to have enough back-up power to
use the trolling motor to get back to the boat launch area. The boat also
has a gas engine, but it is a rope pull-start type so the battery won't be
used for starting a gas engine.

I'll probably go to West Marine or someplace similar to buy he battery and
battery case, and hopefully they will be able to tell me what type of
battery to get. But, just in case they don't know or they give out wrong
information, I thought I'd check here to see what people recommend that I
look for and buy.

Thanks.