#1323, "RE: Timer for charging boat batteries" In response to In response to 3
The ideal for the health of the battery is to keep it on a float charge. This keeps the voltage on the battery at all times and as it needs current the float charger will supply it. All battery manufactures recommend using this procedure while the battery is in storage, even just between trips. If you don't want to buy a charger that switches to float automatically, you can also buy a seperate float only charger.