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HomeRepair HelpLawn Boy RepairLawn Boy Lawn mower battery keeps dying Repair
Lawn Boy Lawn mower battery keeps dying
If your Lawn Boy lawn mower battery keeps dying, start with the battery itself because a dead cell is the most common reason a riding mower battery will not stay charged. Charge it fully with a battery charger first. If the battery still will not hold a charge, replace it. If the battery tests good, move to the charger and verify it is putting out proper voltage with a multimeter, and make sure the outlet is live and has not tripped a breaker. The next likely cause of a Lawn Boy mower battery not charging is the alternator, which should send charging voltage while the engine is running. If alternator output is low, the battery will drain instead of recharge. After that, check the voltage regulator, since a failed regulator can keep the battery from receiving enough voltage and create an ongoing riding lawn mower charging problem. Whether your lawn mower battery drains overnight or the mower battery is not charging during use, entering your Lawn Boy model number on RepairClinic.com is the fastest way to find the exact replacement battery, charger, alternator, or voltage regulator for your machine.
01 - Lawn Boy 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 - Lawn Boy 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 - Lawn Boy 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 - Lawn Boy 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 Lawn Boy lawn mower battery keep dying?
How do I tell if my Lawn Boy mower battery is bad or just not charging?
How do I test a Lawn Boy lawn mower charger?
Could a bad alternator or voltage regulator cause my Lawn Boy battery to drain?
How do I find the right Lawn Boy battery, charger, alternator, or voltage regulator for my mower?
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