What size battery for a Johnson 140?

[andy street]

I am having trouble working out what size battery for my engine i cannot find any info of the size it requires in the manual. could anyone help me out please?
Thanks andy

 

[ezeke]

Re: What size battery for a Johnson 140?

The minimum sized battery is stated in the specifications section of your owner's manual or factory service manual.

My 1988 140 requires a minimum of 360 CCA @ 0 degrees F. or -18 degrees C.

I use 650 CCA or larger but they are Dual purpose deep-cycle because I run accessories.

You would be OK with a marine starting battery at the recommended level if you don't plan on much extra load.

BTW, Don't let them confuse you with MCA ratings.

 

[kenmyfam]

Re: What size battery for a Johnson 140?

More than enough is better than just enough. A few more pounds but well worth having.

 

[Chris1956]

Re: What size battery for a Johnson 140?

Andy, A single group 24 battery is fine to start the motor and power the boat, provided that you do not have any serious power-using accessories that you run with the motor off. A normal stereo system, FishFinder and GPS do not use much power. If you run a live bait well, night lights or monster stereo or use an inverter to power stuff, with the motor off, you will need a larger battery or two or more batteries.