Battery Recharging System. An alternator and a voltage regulator are part of the electrical system that recharges a riding mower battery. If the parts failed, replacing them may restore power to the battery the next time you run the mower.. As a result, the battery may die between mowings.
The charging system's output diminishes rapidly with as little as a 10-percent reduction in rpm. As a result, the battery is often dead when needed to start the mower. If you regularly run the tractor at full throttle and still find a new battery going dead, you may need to replace the voltage regulator and alternator.
Lawn mower battery keeps dying? Use our DIY troubleshooting & videos. Then, get the parts you need fast. Return any part for 365 days.
My John Deere Sabre riding lawn mower battery keeps dying? I have changed the starter and the solenoid, but the battery keeps dying between uses. How can I
Alternators power the small engine while it is running, keeping the battery charged by circulating power back through the system. For the easiest alternator test, simply turn on the headlights to your lawn mower or outdoor power equipment. Then, turn off the engine.
During the off-season, the battery can lose its charge. Charge the battery fully before storing your tractor for the winter. You may also need to charge the battery