Travis, my boat had a 3 bank charger when I bought it, but only 2 of the banks worked. I used an old portable charger to charge the 3rd one for 2 years. Then the other 2 banks went out. I recently bought a new 3 bank charger that was on sale at Bass Pro. Man, it is so nice to just plug it in and let it charge. I'm still keeping the portable charger in case I need it for something else. So for me, it was better to get the 3 bank. Guess I'm out of luck, though, if my old portable one goes out and I need it!
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