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Coleman ut400 battery light comes on when using the winch


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It's not abnormal. The winch uses a lot of power, the charging light indicates battery voltage is low to tell you the battery isn't charging at that moment.

I'm not sure what voltage the light turns on at, but typically you should have 12.5-12.8V not running, and if the charging circuit is running right 14-15V. Below that the light will come on. As you use a lot of power the voltage will drop, triggering the light.

You may find your battery is near the end of its life cycle. If you don't run the machine at least weekly I highly recommend a battery tender to get a reasonable life out of the battery, and make sure it starts when you need it. All of my infrequently used "toys" have battery tenders.

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