I've got a 95 E30TELEOB and have been having cranking issues. I replaced my starter, battery cables, and solenoid, and it was still struggling to start, the starter would hardly turn the flywheel. I was using a lawnmower cranking battery with something like 275 or 300 cranking amps. After swapping my trolling motor battery over which has maybe twice the cranking amps, it fired right up nicely. I thought maybe the lawnmower battery just didn't have the juice to crank the motor, but it worked off that battery pretty well for several months. The lawnmower battery will still hold a 13 volt charge. Is it insufficient to start this motor, or does it just have a bad cell or something, and isn't getting the starter the juice it really needs? I like having both a dedicated starting battery and my trolling motor battery so I have a little redundancy but I operate a pretty small craft so I really don't want to have two big marine batteries on board if I can avoid it. Does anyone know how many cranking amps they recommend for this motor?
