What would cause the bike to lose battery power and kill the bike? I do not know electrical stuff. I have new ricks alternator and new electrosport regulator and exhaust wrap with extra protection around regulator. I have red and black cables coming off battery going under the seat with electrical tape on the ends. I have unhooked factory red cable that goes to the starter solonoid i think is what its called, and have a thicker red wire going from battery to starter solenoid. Off the solenoid i have two red wires added for an aftermarket starter button because the original doesnt work. I killed a banshee battery and thought it was just not good quality and got a yuasa and same thing happened.
One thing to note now that im thinking about since i dont know anything. The cheap banshee battery lasted 99% of the like 200 miles ive put on the bike and this not cheap yuasa that i charged properly according to instructions put my headlights out and then put the bike out only puting like 30 miles on it.
Sounds like your rectifier is shot. Easy test is that you should have around 14.2V across battery at about 200rpm. Edit…2000rpm
