Noco Boost GB20 enough?

[Berberman]

Thinking of getting the Noco boost GB20 500A to keep on board of my AR210, in case I need a jump. I am not planning on adding a second battery. I see most are getting the GB40/GB70, but it seems like the GB20 would do the job just fine? I may be missing something so better inquire before spending the ??

 

[212s]

If that will be the sole use of it, then yes the 20 should do to start these small engines. But if you intend to use it for things like winter boost of your car or friend's car, you'll want the 40. We picked up the 40 on sale which made it worthwhile and I've used it a few times to start dead battery V6 engines for friends without issue. I put it on the boat for the summer and in the truck for the winter. It holds a charge very well so I just top it up before boating season and again when it goes in the truck.