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HomeRepair HelpMTD Mower RepairMTD Lawn mower battery keeps dying Repair
MTD Lawn mower battery keeps dying
If your MTD lawn mower battery keeps dying, start with the battery itself, since a dead cell is the most common reason a riding mower battery will not stay charged. Try charging it with a charger first. If the battery still will not hold a charge, replace it. Next, check the charger and the wall outlet with a multimeter to make sure the charger is putting out proper voltage and the outlet has power. If the battery and charger check out, the problem is usually in the mower’s charging system. A failed alternator can keep the battery from recharging while the engine runs, and a bad voltage regulator can prevent the battery from getting the correct charging voltage, leading to a lawn mower battery drains complaint or a mower battery not charging condition. On many MTD riders, this kind of riding lawn mower charging problem shows up after repeated jump-starts or short run times. Enter your model number on RepairClinic.com to find the exact MTD battery, charger, alternator, voltage regulator, or other replacement part that fits your specific lawn mower.
01 - MTD 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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02 - MTD Lawn Mower Charger
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.
Highly Likely
03 - MTD Lawn Mower Alternator
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.
Highly Likely
04 - MTD Lawn Mower Voltage Regulator
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.
Highly Likely
Frequently Asked Questions
Why does my MTD lawn mower battery keep dying?
How do I tell if the battery or charger is causing my MTD riding mower charging problem?
Could a bad alternator cause my MTD mower battery not charging?
What does the voltage regulator do on an MTD mower, and how do I know if it is bad?
How do I find the right MTD battery, charger, alternator, or voltage regulator for my mower?
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