Cordless Tool Problems?

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Common problems with cordless rotary tools:

  • No power – This can be caused by weak batteries or a poor battery connection on your cordless tool.
  • Sparks coming from contact points – This occurs when there is an issue with the electrical wiring or circuitry within the tool itself or with its battery pack connection.
  • Erratic speeds – This could mean that there are issues with either of two speed control sections within your rotary tool: The trigger speed setting knob or an internal regulator which governs how much power is going through its drill bit attachment at any given time.


Here are some basics steps to follow:

  1. Check all of the connections between the battery, charger and any cords or wires that your cordless tool has to ensure they are tight.
  2. Check the battery charge and see if sufficient power is being received by the tool. You may need to recharge or replace the battery before proceeding with more in-depth troubleshooting steps.
  3. Inspect your cordless rotary tool for signs of damage or wear, such as chips in the metal housing, cracks or broken parts, or indications of excess heat on any plastic components that could be affecting performance.
  4. If you detect any problems, make sure you fix them before continuing with more troubleshooting steps – some issues can seem beyond repair when they can actually be solved fairly easily with the proper attention and repairs!

Check Battery Charge

When checking the battery charge on a cordless rotary tool, ensure that all components are securely attached. Insert your charger into a power source and plug it into your machine, making sure to connect all pins securely. A light should come on within seconds of plugging in. If not, check another outlet or circuit if available.

An indicator light or LED display will indicate the level of charge in the battery.  Batteries usually take 2+ hours to reach full charge. If the LED charge display does not change levels after a few hours charging, the battery and/or charger may be malfunctioning/failing. Most chargers have charts that indicate how to interpret the LED display.

Check Tool Housing

If the housing is loose, damaged or cracked, it may be vulnerable to short circuits and a potential safety hazard. Ensure all screws are securely in place and tighten if needed.

Look for any evidence of cracks in the plastic housing, which could cause pieces to come loose during operation, resulting in a possible injury risk.

Also ensure that all vents on the sides of the tool are clear of debris and dust buildup to ensure proper cooling during use.

Check Motor and Air Vents

Check the motor and air vents on your rotary tool for dirt and dust build-up. Which can reduce airflow, negatively impacting the motor performance or stalling.

Check for debris on the outside of the motor by opening up all air vents. Clean air is essential to keeping your rotary tool functioning properly; dirt and dust can eventually cause internal damage or burning out. The fan should be checked for any obstructions and any trapped dirt particles which may reduce airflow into the housing unit – this should also be cleaned.

Once all exterior cleaning is complete, you may also want to open up your rotary tool’s housing cover to inspect the interior components fully, pay close attention to the wires and connections which may have become damaged due to external moisture or heat exposure. Screw back together tightly before turning power back on and testing your tool.

Tool Not Starting

If your cordless rotary tool does not start.

  1. Check the battery to make sure it is correctly seated in the tool and properly charged. Weak or dead batteries will cause the power tool not to start. Charge it or replace it if necessary, so that the tool has adequate power.
  2. Inspect the main power switch on your power tool and verify that it has been turned to the “On” position. If it has been switched off accidentally, flick it back on and try starting again.
  3. Look for a reset button or fuse on your cordless tool, is located near the motor shaft of your device, press down this in case there is a safety mechanism that needs resetting before attempting to turn your device on again.
  4. If all these steps still don’t work, contact customer service for advisement on further diagnosis.

Battery Charge

Lack of Battery Power is the most common problem. 

  1. Check Battery Charge: Make sure that your battery power is at full charge, as a low battery can prevent an effective rotation from occurring. If you are using rechargeable batteries, check to make sure that they are making contact with the charging terminals inside of your tool and that the charger’s red light is illuminated. If these conditions are met, verify you have power in your wall outlet or vehicle by plugging in another device such as a cell phone charger and seeing if it will hold a charge.
  2. Inspect Battery Connection and Clamps: If there is plenty of power coming into your tool but still no rotation, then inspect running connections and clamps that secure both ends of your battery pack to ensure they are making proper contact with one another or if they need adjustments or cleaning on their ends in order to work properly.

Power Switch

The power switch is the first thing that you should check when trying to troubleshoot issues with your cordless tool. Make sure that the switch is “on” and that it’s clear of any dirt or obstructions.

If you find dirt, then use compressed air to remove the dirt/debris. Inspect the spring inside the switch to make there aren’t any broken pieces or disconnected wires.

Circuit Breaker or Fuse

If the cordless tool has an overload protection and thermal fuse, it is likely these may be the source of the issue. Check your owner’s manual for how to reset the overload protection and thermal fuse. If these components have been tripped or burned out, you may need to replace.

If all else fails, contact a qualified service technician for advice on how to repair the tool.