Milwaukee Battery

[Nail driver]

I have a Milwaukee battery that I use in my Milwaukee chain saw. It is about four years old but not used a great deal. This is taken from the battery: M 18 Red Lithium, High Output, HD 12.0. It will not charge more than two lights on the battery. I cleaned the contacts and tried a different charger. No luck. Can anyone help me please?

 

[RedMF40]

I have a Milwaukee battery that I use in my Milwaukee chain saw. It is about four years old but not used a great deal. This is taken from the battery: M 18 Red Lithium, High Output, HD 12.0. It will not charge more than two lights on the battery. I cleaned the contacts and tried a different charger. No luck. Can anyone help me please?

Has it sat discharged for some time? Batteries like to be fully charged. I’m sure others will weigh in.

 

[Nail driver]

Has it sat discharged for some time? Batteries like to be fully charged. I’m sure others will weigh in.

No but may have sat 3/4 charged for a while

 

[RedMF40]

I don’t know, that may be enough to weaken it or possibly a defective battery. Hopefully a battery expert will weigh in. That’s all I’ve got.

 

[scootergmc]

Those M18 12.0 and 8.0 batteries have a reputation for the cells becoming imbalanced. There are youtube tutorials to rebalance and hopefully save it, if it's no longer under warranty (three or five years I don't recall for the 12.0). Good luck.

 

[Jim.ME]

Is it pushed fully in until it clicks/seats? Some that have only gotten two or three bars after a charge found the battery wasn't fully seated in the charger.

 

[Nail driver]

I will double check tomorrow.

 

[chuckthin]

Those M18 12.0 and 8.0 batteries have a reputation for the cells becoming imbalanced. There are youtube tutorials to rebalance and hopefully save it, if it's no longer under warranty (three or five years I don't recall for the 12.0). Good luck.

Yep imbalanced. I charged low cells with single cell charger but didn't last long till did it again. Ordered new cells and rebuilt.
A lot of work but it works like new.

 

[Loosehandle]

I have a Milwaukee battery that I use in my Milwaukee chain saw. It is about four years old but not used a great deal. This is taken from the battery: M 18 Red Lithium, High Output, HD 12.0. It will not charge more than two lights on the battery. I cleaned the contacts and tried a different charger. No luck. Can anyone help me please?

You did pretty good to get 4 years out of it.

 

[Stephen Newell]

I have a Milwaukee battery that I use in my Milwaukee chain saw. It is about four years old but not used a great deal. This is taken from the battery: M 18 Red Lithium, High Output, HD 12.0. It will not charge more than two lights on the battery. I cleaned the contacts and tried a different charger. No luck. Can anyone help me please?

It ruins the battery on tools not used often. It's not just Milwaukee it's every brand. I have a Dewalt pole saw the batteries would be toast but the same battery fits a drill I use often.

 

[scootergmc]

Battery maintenance suggestion- I cycle my batteries through two tools I tend to use quite often, my M12 batteries I cycle through a magnetic LED work light, and my M18 I cycle them through a vacuum.

 

[JD Dave]

Yeah, with all the finicky batteries and cordless tool issues, we'll be back to corded and air tools in 20 years.

 

[Nail driver]

Thanks to all replies! I checked the battery and how it fits in the charger. It is making good connection with the charger.

 

[Nail driver]

Thanks to all replies! I checked the battery and how it fits in the charger. It is making good connection with the charger.

Battery still is not charging

 

[scootergmc]

Battery still is not charging

The problem is what I said.

 

[1948CaseVAI]

Yeah, with all the finicky batteries and cordless tool issues, we'll be back to corded and air tools in 20 years.

Alternatively people will finally learn how to properly care for their batteries.

 

[neverfear]

Battery still is not charging

Try resetting the electronics of it. Hold the test button down for 5 seconds, then put it back on the charger.