Quote Originally Posted by 98outback View Post
This is what I use. I have had no problems at all with it.

http://www.promariner.com/productFea...oductNum=42012
That's what I'm going with but I'll be getting the 3 bank charger for 3 batteries. The. Battery Tenders are maybe ok for the starting battery but does not do enough to properly charge a deep cycle battery such as an extra battery for stereos. You need to look at 20amp + chargers. The 7amp Ctek do fine for starting batteries and can charge a deep cycle but not one that has been completely discharged and bring it all the way back up. A strong charger is crucial for the life of deep cycling batteries to last seaon after season. Also, you need to do some homework as far as what type of battery you choose. I've made the decision to go with two Deka AGM batteries for the sound system. Each is a group 27 battery with 92 amp hrs which will give me 180 amp hrs which will be more than enough for me to play my stereo all day if I wanted. I'd rather have surplus power vs not enough to have clean, deep sound.