pwc battery as a starting battery????

riverbud55 · Jul 11, 2014

setting up my new g3 1548 vbw,,my 6hp tohatsu is just way to slow so next week having a new tiller 25hp etec installed on her, has power tilt/trim making it 160# motor ,, got yellow top optima for the tm and house power that I keep up front and going to install a battery isolator to add a starting battery,, question would I have any kinda of problems with using a larger size pwc agm battery as the starting battery, I figure if it can start a 4 cyl 100+hp waverunner it should have little problems starting a 25hp outboard,,,, at 1/3 the size and weight on the ass end of boat think it would be worth try,,, always has the rope start,,, reading the manual says it needs a 600 and something cold cranking amps and the pwc battery puts out 325 cca ,,, just want to make sure their would be no electronic issues with the engine

JoshKeller · Jul 11, 2014

i run a 2001 johnson 35 hp 3 cylinder, which is built on an etec block, with a lawn tractor battery. It does fine - i also run two hummindbird 797 side finders and a bilge pump off it.

TNtroller · Jul 11, 2014

A lawn mower battery from WM will work, and only $30 or so. Lots of people go this route and replace when needed.

earl60446 · Jul 11, 2014

No reason why it should not work just fine. Save a little money and only 1/2 the weight.
Tim

DrNip · Jul 11, 2014

It'll work but save money and get a tractor battery. I have no problem running one.

SumDumGuy · Jul 11, 2014

Motor have a pull start?

riverbud55 · Jul 21, 2014

thanks for the reply's folks,,, ended up getting the lawn tractor size battery,weighs in at 23lb ,got a agm battery from the dealer selling me the etec, paid 90$ , smallest battery he would recommend, like agm's myself, running 2 of them in my truck for the last year hoping they last longer then the lead acid battery's that I had to replace every 2 or 3 years