I have a 4 bank charger. One for starter and three for trolling batts. I run my livewell alot and it is off my starter along with my electronics. I use the largest batteries I can. 31 series. Motor needs to run a long time to keep much of a charging input. (So I've been told by Hitec Outdoors) . If anyone knows....they know. I use the Minn Kota MK 440D charger.