Battery gauge?

[mikesmiph]

Not sure what I need, but I need something. Long story short. Went out yesterday, was out 15 mins and had dead batteries. My habit is to plug in my boat and leave it every time I come home. Found out this time, my extention cord had broke and the batteries never charged. I have a gauge on my dash that says battery, it works with the key on. Not sure what it tells me. Is there something I can put somewhere on the boat to make sure I have a full charge before I head out? Was very disappointed today. Don't want this to happen again. Thanks

[Durand Dan]

Does your on board charger have lights to indicate charging/fully charged? That is part of my preleaving the driveway check. along with a quick turn of the key to make sure the motor turns. I have in the past taken half of the extension cord with me!
DD

[mikesmiph]

No lights or meter on the charger. Silly thing doesnt even vibrate lol. Works great if its plugged in though.

[Firefighter Jeff]

Mike, it might not be the most efficient way to check the batteries but I have a small tester I bought for like 10 bucks.  I keep it in the boat.  I actually used it just last Sat for a fellow angler that was having electrical problems on a brand new battery.    Jeff