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Lawn Mower Battery Keeps Draining

The lawn mower small engine often has a separate model number. Use the small engine model number for a complete list of symptoms and parts. Watch our model # lookup video for help finding the model number.

The 4 most common part(s) or condition(s) which cause the symptom Lawn mower battery keeps draining are listed below starting with the most likely. Check or test each item and watch any available videos.


Enter your model number for the best repair help results:


To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Battery

If the battery keeps draining and won't hold a charge one or more cells in the battery might be dead. Try charging the battery with a battery charger. If it won't hold a charge the battery will have to be replaced.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Charger

If the battery keeps draining the charger might not be working properly. The charger's electrical output can be checked with a volt meter. Also, check the outlet that the charger is plugged into. Many garage electrical outlets are protected by a GFCI breaker that might have tripped. If he charger is working properly the battery itself might be defective.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Alternator

The alternator provides power to the lawn mower while the engine is running. It also serves to recharge the battery. If the battery keeps draining the alternator might be defective. If the lawn mower has headlights, try turning on the lights and watch them while turning off the engine. If the lights dim after turning off the engine the alternator was working. If not, the alternator is probably defective.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Voltage Regulator

If the lawn mower battery keeps draining and won't hold a charge the voltage regulator might be defective.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

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