What sort of battery do i need?

mattsaks

Petty Officer 2nd Class
Joined
Aug 7, 2004
Messages
156
Hi. I am wondering what size starting battery i need for my 93 tohatsu 90hp? How many cranking amps etc...
 

Paul Moir

Admiral
Joined
Nov 5, 2002
Messages
6,847
Re: What sort of battery do i need?

The recommend battery is at least a 70Ah battery, which is pretty much a group 24 or larger battery. 70Ah is equivalent to having 180 minutes 'reserve capacity'.
 

mattsaks

Petty Officer 2nd Class
Joined
Aug 7, 2004
Messages
156
Re: What sort of battery do i need?

Ok. Any recommendation on cranking amps?
 

Paul Moir

Admiral
Joined
Nov 5, 2002
Messages
6,847
Re: What sort of battery do i need?

Ooops - <br />Well, there's no spec for it but I would expect anything 650 CCA or above would be fine.<br /><br />FWIW - I really doubt your starter ever draws more than 200A, so the CCA requirement isn't really all that important. I guess that's why they didn't include it. Capacity is important though, so it's worth getting the largest battery practical. The starting AGM batteries are really well suited to marine uses - you may want to consider one.
 
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