The Toro O turn 5060 mdl 74641 SN314000001. All of the wires look OK. It's the 25 amp fuse in the charging circuit .Voltage output has very little to do with blowing fuses. I would be looking for a frayed or shorted wire. Which fuse is blowing? Include the model and serial numbers of the unit when posting back. Look under the seat for them.
OK , thanksAlso to just you know that the 14.7 is within the service limit of 15 vdc as long this is at full throttle..