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HomeRepair HelpCraftsman Small Engine RepairCraftsman Small engine battery keeps draining Repair
Craftsman Small engine battery keeps draining
When a Craftsman small engine battery keeps draining, the voltage regulator is the most likely cause. While the engine runs, this part controls voltage from the alternator so the battery can recharge properly. A defective voltage regulator may allow too little voltage to reach the battery, resulting in an engine battery draining, a small engine battery not charging, or a battery that will not hold a charge. The alternator is the next likely problem. Use a multimeter to test alternator output while the engine is running before replacing it. If the alternator is not producing the specified voltage, it cannot keep the battery charged and you may notice the engine battery dies repeatedly or the engine will not start after sitting. A weak or damaged battery can also lose its charge, but test the charging system first to avoid replacing a good battery. Always disconnect power and follow proper safety procedures before testing or replacing parts. Enter your Craftsman model number to find the exact voltage regulator, alternator, battery, or other replacement part for your specific small engine.
01 - Craftsman Small Engine 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.
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02 - Craftsman Small Engine Alternator
To determine if the alternator is defective, use a multimeter to test the alternator output.
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Frequently Asked Questions
Why does my Craftsman small engine battery keep draining?
How do I test a Craftsman small engine alternator?
How can I tell if the voltage regulator is causing my small engine battery not to charge?
Could the battery be the reason my Craftsman small engine battery keeps dying?
How do I find the correct Craftsman small engine battery, alternator, or voltage regulator?
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