Why is the electric wrench lacking power?

2 Answers
DeAugust
07/29/25 3:22am
There are several reasons why an electric wrench may lack power: Insufficient battery: If the electric wrench feels weak and lacks power, the first thing to consider is whether the battery is low. Try charging it fully before using it again. Rust and resistance: This universal small spray can is no stranger to anyone. It's a versatile rust remover that can be used on everything from satellites to screws. Spray WD-40 onto the rotating bearing part of the electric wrench for about 20 seconds. You can spray while observing and let the motor rotate at the same time. This will lubricate any rusted or resistant areas inside, solving the wrench's power issue.
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VonKylie
08/12/25 1:58pm
I've encountered the issue of a weak electric wrench before, probably due to insufficient battery power. Sometimes when we're using wrenches for car repairs, high-intensity work can quickly drain the battery, especially with old batteries or those not fully charged, causing the tool to suddenly lose power. Once when I was working on engine mount bolts, my wrench suddenly became weak. After checking, the battery voltage was only 10V, but it worked fine after replacing with a new battery. I'd suggest trying to charge it first. If that doesn't work, check if the battery contacts are oxidized or dirty. It's also common for batteries to lose capacity as they age. Regular maintenance of your tools is important to avoid delays and efficiency loss during car repairs. It's best to keep a multimeter handy to check voltage regularly - if it's below 12V, it's time to replace or repair the battery.
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