just a ? do your boat batteries need to be charged at all times or is it better to let them run dead then recharge {like drill batteries } nothing worst then running dead batteries

If you have a good quality onboard charger, I would recommend leaving them plugging into a 120 volt AC plug always. Let the onboard charger maintain your battery's voltage levels by essentially "trickle" charging them.

Here is a really good article the covers a lot of the basics: http://www.basspro.com/webapp/wcs/stores...;objectID=32839

Hope it helps,

~ Im2bz2p345

thank you ,don't have one need to get

The only time they shouldnt be fully charged is when your using them.

X2

I use an onboard 4 bank charger that has a maintenance mode. I have always left the boat plugged in and during the winter months, it stays plugged in for 4 months without use and I have never had any battery damage and my batteries typically last 3 years or more before needing replacement.