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2020 xrs turbo rr-blue
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Have you tried raising the idle speed up to 2-3000 rpm’s? Even the winch on my truck works better if I hold the rpm’s up
 

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Stock winch uses alot of juice, drains quick if its working hard. When using shut off stereo and rev it up a bit if the winch has to work hard.

Sent from my SM-G981W using Tapatalk
 

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Discussion Starter #23
Update: I actually had a bad battery cell on the stock battery. It still showed 12.5V at start up and sat at 14.2v. It only registered 83CCA.

I even switched batteries with a new similar one and got the same result so either I was very unlucky and got two bad batteries or the stock option just isn't enough. Perhaps the new smart shocks or new options have more things relying on the battery because I've seen it on several 2021 models and not just Xrs.
 

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Discussion Starter #24
Also, shutting things off and revving the engine did not good but I was obviously trying that on a bad battery.

Testing the new upgraded battery this week at Windrock.
 

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Winching takes huge power. A 3000lb pull could draw 200 amps (varies with the effective drum size).

If the winch is going to work, the juice has to come from somewhere. The only place that could deliver that much is the battery.

Batteries are odd things - they will never deliver all the juice they are said to hold and how much they will deliver depends on how fast they are being asked to deliver (other factors like age and temperature also apply).

The battery can be supplemented by the charging system. The generator output of 850w is the MAXIMUM it will supply. At engine idle speed, the net output is likely to be very low.

So, when winching, always have the engine running above idle speed. Winch in short bursts so that the battery can be stopped up in between.

If you use your winch often, consider wiring the winch to a second battery which is wires with a split voltage sensing charging system.
 
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