How to Troubleshoot a Milwaukee Universal Charger

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Milwaukee's universal charger recharges cordless power drills.

Many modern power tools are capable of using battery pack power, rather than needing to directly plug into an electrical wall outlet. Work-at-home handymen and hobbyists might own several of these power tools. They might own multiple batteries to make sure the tools have a constant supply of power. Milwaukee's universal charger is suited for charging these extra batteries. However, if this simple accessory malfunctions, then the power tools that depend on it are nearly useless. If this is your predicament, you can perform a few troubleshooting steps to remedy the universal charger's battery recharging problems.


Step 1

Place the battery pack back on the charger, if it automatically shuts down because it is too hot. The charger's flashing light will flash red, indicating the battery has a very hot temperature. A solid red light means that the battery pack has cooled down. You can begin using the battery pack again.


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Step 2

Allow the battery to perform self-heating functions, if the surrounding temperature is well below freezing. The unit will emit a buzzing sound for the first minute while it is warming up. The battery pack can operate at around minus 4 degrees Fahrenheit. When you proceed to use the battery with a tool, only use it for simple and less intense activities. After a minute of light use, the battery pack will have sufficiently warmed up.


Step 3

Allow new battery packs to charger overnight. This gives the cell technology the opportunity to attain a full charge.

Step 4

Charge batteries in places with moderate temperatures. The ideal temperature range is 41 to 113 degrees Fahrenheit. Store batteries in temperatures less than 120 degrees Fahrenheit.


Step 5

Call the Milwaukee Factory Service/Sales Support Branch at 800-729-3878 if you feel that your battery pack is defective. The customer service agents will advise you on your next steps to troubleshoot and/or replace the battery. You can also contact a local authorized service station.


Navigate to Milwaukee Tool's "Download Manuals" website to find troubleshooting instructions specific to your universal charger (see Resources).

Milwaukee power tools have a five-year limited warranty.

If you have technical questions, you can contact the Milwaukee Tool support department at 800-729-3878. Alternatively, you can send an email via the company's website (see Resources).

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