I don't need a charger for my cranking battery, as my big motor does a find job, and I only have two digital sounders
hooked up. My trolling motor is a 24 volt, and I have two new batteries. Like I said they are hooked up to the
Minn Kota d210. Instructions come with the charger. I chose this one because of price. I would have gotten the
d220 if i were on a trournament trail, because it charges both batteries at 10 amps. MY d210 charges at 5amps,
and will fully recharge my batteries in 10 hours. Charging to full overnight is fine with me, and the charger is $100
less than the d220. Charging at a lower rate 5 amps will prolong the life of a deep cycle over a faster charge. Once
charged but still plugged into house current, the charger will maintain the batteries. Just read up on them at the
MinnKota web site.