How often do you charge your trolling motor batteries?

Hello, I have a 12V deep cycle marine battery hooked up to a Minn-Kota All-Terrain 40lb thrust trolling motor.



My question is, how often do I have to charge my battery up? I tend to use it for about 3-4 hours on the weekends, and mabye 1-2 on the week days.How often do you charge your trolling motor batteries?
It's hard to bring a partly discharged battery up to fully charged overnight, but I charge my batteries immediately after use, each time.How often do you charge your trolling motor batteries?
I ran a 36 volt system with 2 banks of batteries. 3-4 hours on each cruise.I always charged after each outing with a 36 volt golf cart charger.I always had a spare,fully charged battery on board. If you're up that creek without a battery even the paddle seems lame.How often do you charge your trolling motor batteries?
Unless they are in actual service all batteries should be either getting charged or in 'float' - a maintenance charge to keep the battery close to maximum. Any storage battery kept in a partial discharge state will degrade and lose capacity.