milwaukee 18volt charging issues

Archived from the Tools In Action forum (Milwaukee). This thread is read-only.

toneboneMember since Apr 2014

Gotta 18volt drill bought in 2009, batteries charge…show full charge on battery, but only last very short time. Anyone know how to test the charger to see if it’s defective, or if the batteries are defective? Charger is a 48-59-1801…batteries are 48-11-1815. I don’t want to buy batteries if charger is problem. .thanks for helping..tonebone

DR99Member since Nov 2012

Do both batteries die in the same amount of time? The other question is how long do the batteries take to charge?

Conductor562Member since Nov 2011

2009…..Are they Red Lithium?

If both packs do the same thing that usually means charger, but that doesn’t explain them both showing a full charge.

mustang347Member since Mar 2011

It’s hard to say without having batteries and charger in front of me to put a multimeter on but I think that since the batteries are showing full charge the charger is working. I’m thinking the batteries don’t have enough “ass” any longer. Kinda like when the battery on your car dies. It may show twelve volts but doesn’t have enough power to start the car………

DR99Member since Nov 2012

That’s whats confusing me too the pack showing a full charge

DR99Member since Nov 2012

The battery packs are also getting up in age. If they sat around a lot that’s not good for the batteries, or the other issue is you have just wore the batteries out they only have a finite number of charges and discharges before they will fail.

Conductor562Member since Nov 2011

A multi-meter would be the way to tell. Should be getting around 20V if fully charged.

If a 12V car battery is fully charged it has almost 13V’s of juice. The same principle applies. Anything down below 19V should be a pretty good indicator that the packs are toast.

toneboneMember since Apr 2014

The best I can tell with my voltmeter is 14.45 volts coming from charger. 19 volts at batteries, but the batteries don’t last long at all. The batteries will show 4 lights after charging, they just peter out to 1 or 2 lights real quick. Any thoughts?

DR99Member since Nov 2012

If I get a chance tomorrow I will check out the voltage my charger puts out, but it sounds like the batteries have kicked the bucket. The most economical thing is to look at buying new drill kit you can find some good deals online or in store some times with a free bare tool or extra battery. its 120 dollars for 2 M18 compact batteries. http://www.homedepot.com/p/Milwaukee-M18-18-Volt-Lithium-Ion-Compact-Battery-2-Pack-48-11-1811/203806671?N=5yc1vZc25yZzvZ1z0ulnw A new drill kit is is 159 or cheaper if you look around online http://www.homedepot.com/p/Milwaukee-M18-18-Volt-Lithium-Ion-1-2-in-Cordless-Drill-Driver-Compact-Kit-2606-22CT/204322452

NicholasShetleyMember since Nov 2013

Amazon or eBay are great places for batteries. They are way cheaper.

toneboneMember since Apr 2014

I bought one new battery off ebay…got it for 35.00. Gonna see what happens , I’ll let you know .

JavierMember since Aug 2013

Wait!! don’t BUY batteries. I don’t know about your home depot but mine claims they will swap out milwaukee batteries and do the same for ridgid so its worth a try

toneboneMember since Apr 2014

Purchased in 2009. Neither Home depot or milwaukee will talk to me about swapping out now.

toneboneMember since Apr 2014

New battery just arrived. Had 14.5 volts out of the package.charged up to 18 quickly and holds power like it was a new drill. Gonna buy another battery and keep this drill .works great now. Guess the chargers only put out the 14.45.not sure , just know it charged fully . Thanks for everyone’s help/ input … tonebone.

NicholasShetleyMember since Nov 2013

Glad to hear.

DR99Member since Nov 2012

Glad to hear that you figured out what was wrong.

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