If your Yard Machines lawn mower battery keeps dying, start with the battery itself, since a dead cell is the most common cause. Charge the battery with a charger first. If it still will not hold a charge, the battery is likely bad and needs replacement. If the battery checks out, move to the charger and verify it has proper voltage output with a multimeter, and make sure the outlet has power and has not tripped a breaker. On a riding mower battery will not stay charged complaint, the next likely causes are the alternator and voltage regulator. The alternator should supply charging voltage while the engine is running, and the voltage regulator controls how much of that voltage reaches the battery. If either part fails, you can end up with a mower battery not charging or a lawn mower battery drains problem. RepairClinic.com makes it easier to track down a riding lawn mower charging problem by letting you enter your Yard Machines model number to find the exact battery, charger, alternator, voltage regulator, or other replacement part that fits your mower.
01 - Yard Machines Lawn Mower Battery
One or more cells in the battery may be dead. Try charging the battery with a battery charger. If the battery still won't hold a charge, this indicates that the battery is defective and will need to be replaced.
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To determine if the charger is defective, use a multimeter to test the charger for proper voltage output. In addition, test the outlet used by the charger, and ensure that the outlet has not tripped a breaker.
The alternator provides voltage to the lawn mower while the engine is running and also recharges the battery. To determine if the alternator is defective, use a multimeter to test the alternator voltage output according to the wiring diagram.
While the engine is running, the voltage regulator sends the proper amount of voltage from the alternator to the battery to keep the battery charged. If the voltage regulator is defective, the battery won't receive enough voltage, causing the battery to drain quickly.