Feeling vulnerable here. My crank battery died on my Excel 203 with a 115 Merc. I no little about batteries. I do know their are different in output. What do I need to look for in a replacement?
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Feeling vulnerable here. My crank battery died on my Excel 203 with a 115 Merc. I no little about batteries. I do know their are different in output. What do I need to look for in a replacement?
if you got a Academy sports near by they have some good batteries in the fishing department that would do just right for you; a group 27 battery is what you want and they got a good deal on them !!! or go a AutoZone they got group 27 marine batteries for a fair price too!!!! hope this helps !!! stay SAFE and have a Happy 4TH of JULY !!!!
Check with your local NAPA store we have a rebate Visa Card promotion that started the First of July. They can save you some money on a quality battery.
Its about physical size....but also its about how many cranking amps....and amp hr. capacity the battery has. Look on your battery.....it should have a group number on it....24, 27, 29. The bigger the number the more capacity. So say you have a group 24 and it seems to get weak running two fishfinders and live well .....then a group 27 would be better. I always use group 31 for my trolling motor batterys and whatever size the cranking battery is that comes on a new boat....ialways go up one size when i replace it.
According to the Marine Application Guide .... your 115Merc only needs a battery that has : 450 CCA (525 MCA)
That would be (in most cases) a group 24 size battery.
My cranking battery is a EverStart Marine Group 24 (500CCA) and my 1999 90HP Merc 2strk outboard will practically keep it charged up from a normal days use (sometimes less than 30mins actual running time). It runs the big motor, small 2d sonar, and the livewell pump (when necessary). After the initial cranking at launch, it generally fires right up with a quick turn of the key for the rest of the day.
If you have/use more components (pumps, sonars, lights, etc) and have the space to hold it ... the recommendations for a Group 27 Marine Starting battery might be a consideration.