Battery for an 18hp electric start mercury

[49 Willys]

Hey fellas
got the 18hp elect start mercury.
Now I came across FREE a new 12v 35amp will this reliably start the merc and the merc charges the battery.
Reason I ask is that the battery is about 2/3 the size of a standard car battery.
What do you guys think?
Thanx

 

[jethro]

Sounds like a powersports battery which might work fine, but most starting batteries are between 45-50 amp hrs.

 

[TNtroller]

Compare what you have to a U1 lawnmower battery at WM, the U1's will crank an 25 if in good shape.

 

[beagler1]

I have a 20hp merc electric start and have a yellow top marine battery. Very powerfull. Was lucky to get it for 100 bucks.


Sent from Mossy Oak Swamp Bottom

 

[earl60446]

Hey fellas
got the 18hp elect start mercury.
Now I came across FREE a new 12v 35amp will this reliably start the merc and the merc charges the battery.
Reason I ask is that the battery is about 2/3 the size of a standard car battery.
What do you guys think?
Thanx

I think it will work just fine.
Tim

 

[gunz]

I used a motorcycle battery on my 9.9 and it was a small motorcycle battery. I was just trying to save weight and I had several motorcycle batteries from motorcycle projects (my other vice)

 

[Clint KY]

I used a battery from a lawn mower to start my 25hp Evinrude for years without any problems. That size battery starts a mower with 25hp, so why wouldn't it work on an outboard?