So this is my problem, the alternator on this engine doesn't have enough amperage to keep my batteries charged to run my boats electronics, bait tank, stereo, lighting etc. Currently have 2 standard deep cycle batteries w/selector switch. Have it so that one battery is used as a backup, so everything is running on one battery (including starting) I know I need to change it so that I use one battery for starting and another for the rest of my stuff. My question is this: Should I go to 2- 6 volt batteries to run the electronics and everything else. And if so could I get away with 2 flooded cell batteries, like a Trojan T-125 or do I have to go with 2- 6 volt AGMs? lets face it the AGMs are twice as much, so if I could go with the T-125s it would be better. Thanks ahead of time for any input.