How many Batteries

two, if you don't have two you should have a jumper for sure

Two with a switch

One for me.

2 optimas

I have 3 on mine, 2 on a two battery switch switch for the engine+accesories and 1 for the radio+amps+sub+dvd+lcd on a seperate switch where I can tie it into the main batteries or seperate it completely. Maybe overkill but I can leave the system on all day without worrying about it starting..

The sub won`t drain your battery, but the AMP that powers the sub will drain it. I think you should always have 2 batteries on a boat - with switch of course.

obnoxus said:

2 optimas

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Same...with switch of course.

1 for each eng and 1 for each sub = 4

I have one battery now is it ok to go with a different kind or do the need to be the same.

s022mag said:

I have one battery now is it ok to go with a different kind or do the need to be the same.

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I'd go with one cranking battery, and one deep cycle. But, I only run one so what do I know? :laugher:

I don't use my stereo or lights much so I've never had any issues with just one.

Two switched batteries AND a 475amp jump starter - just in case....

2 switched 1,2 all

Just my thoughts
1 motor one battery
2 motors two batteries
2 Motors, subs ,Gps and extras three batteries

Dont get me wrong Optima Batteries are great but for the price they dont last as long as they should. I picked up two Stowaway batteries this spring for 120 bucks. If they last 2 years thats fine. I'll just replace them again for another 120 bucks. I will take newer regular wet cell batteries over older gel cell any day.

Always go with a switch and I use an on board charger (dual bank) keep it plugged all the time and my battery problems have become a thing of the past. Even running amps for stereos cranked up for 6 plus hours at a time

Only one...and I learned the hard way last weekend....I need two.... After 3 hours of tunes in the cove...no start....phhhhhhhhhhhht.

2 ON A SWITCH FOR ME.

I have 2