Ok guys, I finally went ahead and bought a Bass Pro XPS 5/5/5 onboard charger..but my question is, what brand or kind of batterys do yall recommend..I have a cranking battery of course, and only one trolling battery..from what ive read I can hook the 3dr bank of the charger along with the second bank to my trolling battery... The boat new in 01 came with Interstate batteries..well ive been through about 3 Interstate cranking batterys..and the trolling has held up pretty well, but i figured its time to replace them both..the cranking is shot again..so with my bad luck with Interstate I dont think I want to waste my money on that kind anymore..whats your suggestions? the boat has a 01 Johnson 150 on it..how many cranking amps do i need for that motor, i beleive it has 400 cranking with the junk battery thats in there now..oh but i dont want to spend in the $200.00 range for batterys either..thanks