Can a 30 year old Evinrude outboard ( 55 hp ) recharge my 2nd battery?

Question

I use a 2nd battery for an electric trolling motor and have a 15 watt solar panel to assist in the charging but would like to wire the battery so the evinrude could recharge the battery after the starting battery is charged...

Answer 1

yes yes yes     get a switch and change batterys but    it may not charge a large deep cycle batt that you need on short drives

Answer 2

Your motor has a 4-amp (possibly a 6-amp) alternator...it would take hours and hours of full throttle running to keep the trolling motor charged.

One way to more than double your T/M run time is to add a 2nd battery wired in parallel with the first.  They need to be matched as to capacity and condition.

Answer 3

It's designed to keep a fully charged battery charged not charge a 1/2 1 up> You can put a 3 way battery switch in and switch when running it will help up not much>

Answer 4

Jtexas is on target. The 4 amps was at a pretty high rpm, so effectively it wouldn't charge much up.  They did make a 10 amp kit, for retro fit. but it's not much better.  The battery switch won't help.