I have a Triton tr186 and I need new trolling motor battery's this year. I can get a VERY good deal on them. So I need to know if I will have trouble getting them in or are they the same as a normal battery? And do I get the yellow or the blue tops? :-/ :-/ :-/ :

I've never been bashful about saying I wouldn't have one, but look at the reserve minutes of the Optima's and then compare that to you're current batteries and see if you're willing to give up that much capacity (run time).

Their largest Yellow top D27F is 66Ah or 140 Reserve minutes.

Their largest Blue top D31M is 75Ah or 155 Reserve minutes.

Wally Worlds EverstartMaxx is 125 Ah (about twice that of the Yellow top)

Most flooded cell, group 29 deep cylce batteries will give 105 - 125 Ah and group 30/31 will give 115 - 130Ah, all at a whole lot less cost the Optima's.

That's about 25 - 50% less than a comparable size flooded cell battery that cost about 1/2 what the Optima's cost.

The group 31 Deka AGM will give you 105Ah and 185 Reserve minutes, and it's a better battery.

Also, check and make sure you're onboard charger can be switched over to charge AGM batteries.

AGM batteries can give you as much a twice the battery life over most flooded cell batteries, but that's only if you have a high quality charger, designed to properly charge and maintain AGM batteries.  If not, you will only get a little more battery life over the flooded cell batteries, and can get less with the wrong style charger.