Milwaukee Battery Flashing Red and Green? How to fix M12 M18 Red lithium charging fault not charging
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- เผยแพร่เมื่อ 11 ก.ย. 2024
- If you're a Milwaukee tool user, you may have encountered a common issue where your M12 or M18 red lithium battery starts flashing green and red when you try to charge it, indicating a charging fault. But don't worry, there's a simple solution to fix this problem and get your battery back up and running in no time!
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Saved some money. Thank you Mate. Liked and Subscribed.
@@MrFrattinivincenzo You are welcome
So try another charger. There, everyone just saved three minutes.
Do you have the M12 smaller charger? Hope it worked for you🤝
Don’t forget that if you don’t own a second charger this doesn’t work
@jimmywalden1615 indeed
When that don't work then what?
Didn’t work sorry bud
Great advice and great video! I was lucky enough to have 2 chargers and it worked. Only difference was that it worked opposite of your way. It worked with the dual charger, but not the single in the beginning. Also, be sure to press the battery FIRMLY down on the single charger until it seats. Now the batteries charge just fine on both.
Thank you. Glad it worked for you🤝🏻
Thank you! Got them warrantied and it’s doing the same red and green. So i figured there has to be a way of bring it back to life. Thanks for this! Charging now 😊
Glad it worked for you
I also unplugged my M12 for a full minute before trying to plug anything back into it and that fixed it too
👏🙌
Just tried this myself with my M12 charger and seems to work for the moment. I feel I read or saw an American TH-camr mention something about the fast chargers doing this kind of thing to batteries, may be was VCG who mentioned it
Glad it worked for you buddy. Thanks for letting me know
This just happened to me. My m12 side was charging for 15secs then blink red and green. I said ....naw. So I waited 4 or 5 minutes and tried again. It went straight to blinking. When I pulled the battery out, both sides blinked red and green and then shut off. Would not recognize a battery. Took it apart and nothing obvious. Out of curiosity, I tried it this morning and it's working
@@pointedspider Did you charge it on the M12 or the M18 rapid charger the next day? Only the M12 worked for me hence I did the video to help others
It's not the fast chargers screwing up the batteries.
Just tried this on a newer 6.0 I purchased and it worked thanks
Nice one.🤝🏻
Just try gently bending the three electrical contacts (not the two parallel blade contacts) towards the centre of where the battery goes (ie away from the edge of the recess).
Thanks
This fixed mine.
@@michaelmarvoshlsattutor7282 Nice one. I ask all who have success to leave a comment and let everyone know this works. 🤝
Me too!
@@jeremysteed4332 Thank you
Hey, thanks! Watched a bunch of other videos for how to fix a blinking battery by cleaning the contacts, this was the only one that actually worked right away on my 12v. Cheers!
Nice one. Thanks for sharing
I have no doubt that this works for some batteries. It obviously did in this case. But it doesn't always work. I have two M12 XC6.0 batteries which failed to charge after very little use - one charged just a single time when new, then never again - and they both failed in two different standard M12 chargers. I tried charging them in a standard M12/M18 charger and they still error out. I do not have a high speed charger to try them in.
In any case, thank you for posting this because it at least re-assures me that I'm not the only one to have extremely poor results with these batteries. The tools are awesome, but it's really unconscionable to use that quality as a vehicle to sell way too many expensive batteries than we should have to buy. So far, I'm 2 for 4 on them and very unhappy about it. My old Hitachi professional grade 18v stuff is kind of old school, but vastly superior to these modern Milwaukee tools.
Thanks for your nice comment
Hi, I was having the same problem with my bluetooth speaker I had It on charge and the Indicator lights on my speaker were flashing from red to green, I notice It wasn't getting the full charge, but when you mentioned try a standered charger ,which, I did the, Indicator lights stop flashing and now my speaker Is fully charge as well. so It was my fast charger all along....so thank you👍
Glad to be able to help🤝
Why won't it work for me then ?
I just took it out and put it back in a couple of times and it worked
Nice when it is a free fix🤝🏻
I had the same issue and forgot about my M12 only charger. Both my rapid charge M 18/M 12 chargers and my normal M 18 M 12 charger said the battery was faulty but my regular M 12 charger seems to be charging it just fine. Thanks for helping me remember I had this other charger. Other batts worked fine on them tho so…. Not sure. Thanks again.
Glad to hear this videos has helped so many people🤝🏻
Sheesh. It took 2 attempts (in and out) in the other charger but it than worked for me! Thanks!
Nice one. 🤝
Thanks so much! Thought I bought faulty batteries. 😮💨
Glad you found this video
I've tried everything to bring back a good handful of M12 batts. They seem a little glitchy over the last several years..
Yes, thank you. This was driving me nuts 😂
Thank for your message. Glad this was helpful
so after you use the slow charger a few times does the fast charger work on the original problem battery on recharges. Or are you saying its the rapid charger doesn't like a battery that has a different range of resistance at a certain life cycle. I have like 10 of the rapid chargers and it only does it on some same batteries all the time and the other batteries are always ok in the rapid.
Milwaukee M12-18C. I found the cause of the failure (when connected without a battery to 12V it lights up green and red alternately) the MOSFET AP9565BGH in the 12V socket had a short circuit and the temperature damaged the PCB (it rose with the copper foil) I desoldered it and now the 18V socket works without problems -
Wow. Thank for this info man. Can you do a video on it. I would love to see how is done as I know nothing about electronics. Thanks
@@TheKeenMechanic If you don't know anything about electronics and electrical engineering, then you better not open the charger. When the 400V electrolytic capacitor discharges with your fingers, then you will understand my message... Greetings from Switzerland
@@Popajaja Thanks
I will not interfere then🤣
I Call it BS same issue, same battery, I trying before even watching this video & both chargers throwing same error
It worked for me so I thought I share it with others. I am just trying to help others save money where possible. I am sure it will not work for everyone but it worked for me. Thanks for leaving a comment anyway
How ungrateful of you to make such a remark, Ataham?!
I bought an m12 and m18 drill second hand good price, very hard to get batteries and after 2 months managed to get them from toolstation.
Had same prob now pushed them in bit more force and charging. Will nèver buy milwaukee, stay with dewalt.
Worked like a charm. Thank you!
Nice one🙌
Before you guys do anything. If the red/green is going. Get a can of electrical contact spray and spray where the battery goes in. Grab q-tips and clean it well.
Thanks 🤝🏻
I bought the single M12 charger hoping this would work, but first time I tried, it did the same thing, blinking red/green after 20 seconds, this is driving me nuts, I know the battery is good
A lot of people are returning brand new batteries as they are faulty from new
yep! This did actually work for me once, but now I have tried this on 2 x M12 batteries that have the same issue, the standard charger is doing the same as the fast charger, so this is not a fix, maybe I fluked it the first time like you?
I was surprised it worked for me too so I decided to share it. Thanks for your message
Just bought brand new M18 drill and impact, came with 2 batteries, both are flashing red and green. Horrible man lol. Just my luck
Return for a refund buddy. 🤝🏻
@@TheKeenMechanic yes I did earlier. The batteries were duds. Got working ones noe
I bought a brand new drill and battery and the battery did the same thing. I ran the drill with it for about 10 seconds. After that it took a charge like normal.
Thanks for letting us know. 🤝🏻
Very nice video
Thank you
I don't understand the solution. Is the solution just to use another charger?
Yes. Old type m12 charger. Doesn't always work but it is worth the try. Worked for many people so far
It work
So I had the red and green light problem.... I simply plugged the charger cord into a different power block and it worked..... this might save others a lot of time , $$ and aggravation... I know I was getting very peeved, about to return this 200$ jacket.....also mine is brand new so it shouldn't be doing that already wtf
🙌
So the point of this is the M12/M18 chargers may not work on some batteries that may not actually be bad? So try just the M12 charger?
Seems that my M18/M12 charger was not able to charge the M12 battery but the M12 only charger did the job. It has not worked for everyone but a lot of people were lucky like myself and it worked
@@TheKeenMechanic ok got it thanks.
worked for me! Thanks
Nice one, hope more people like you leave comment's so I know this is working for a lot of people
Mine still flashes red/green on the regular m12 charger. I bought my 6.0's only a year ago and they both are doing this. Junk
Probably a faulty batch. I wonder how many people have returned. My video has over 30k views so this just goes to show you this is a big problem
@TheKeenMechanic what a shame. I really enjoyed milwaukeee tools up to this point. They're still under warranty but to have them die after just 1 year of light use is unacceptable. I'm going to warranty the batteries but already it's showing to be a major pain having to sign up on the website, look serial numbers, look for my proof of purchase, AND then package and ship the batteries to their service center which will take weeks to send get back. I'm done with them
@@doom3380 Hope they fix it as I really like their tools
I'm having the same issue with mine, first battery went out 6 months ago, now the other one is going out too, i got it as a 2 pack 6.0
@@MyTran-ri4do Something is wrong with these 6.0 batteries. A lot of people are complaining
My kit is brand new and one battery is doing it. It probably because I left it attach to the drill for such a long time
Possibly. Try it on the m12 charger🤝🏻
I only have the combo charger....
It is always handy to have the M12 charger. I only use it for all my M12 batteries. Since then I have had no issues with my M12 batteries dying prematurely
Hate to say it but you left me confused. I NEED to buy the M-12/M18 battery charger, plug my faulty battery in it and THEN plug my faulty battery into my wall mounted 4 port M-12 charger? Thank you in advnace.
Just use M12 only charger. The M12/M18 seems to be unable to charge the faulty M12 batteries. It is either causing the damage or is unable to charge a battery with a problem. This may not work for everyone but has worked for me and many others. Hope this helps
@TheKeenMechanic thank you I only have the 4 port m12 charger and on m12 3.0 battery makes it blink red and green. Guess it's bad.
@@ironman1518. Yed, Probably bad.
the m12 charger and the origional m12-m18 charger don't have this problem. it starts happing with the m12-m18 fast charger
Spot on🤝
Ive had the same thing also happen with a rapid charger.
Seems to be a very common problem judging by the amount of people that have reached out
I have the same problem and i do the same thing but the batery doesn't charge full...when its conected to any m12 tool IT show 3 dots ouț of 4...
I have the same problem with 2 of my batteries. The reason it doesn't go to 4 bars is that some of the cells are damaged
worked for me 😎
Thanks for letting us know. I am so glad to see this helped hundreds if not thousands of people all over the world. 👏
I tried this on both chargers and it didn’t work. M12 batteries are trash
There is a good video from a guy who tests milwaukee tools and batteries. He says some of them discharge way too low and get damaged if used by slow draw tools. Hope you get sorted
Thanks bud this worked for me! I was going to get a new one but you saved me some 💰
👏🙌
@@TheKeenMechanicactually it's flashing again I thought It worked but it didn't. Thanks for the try though!
@@-Enrico did you try the small m12 charger
@@TheKeenMechanic yep
I had this on the 12/18 rapid charger, 12/18 charger, m12 radio. Dug out the old m12 charger and it's charging.
Nice one
1 month later and now it no longer charges. Got 1 more month thanks!
Don’t work or not for me junky 6 amh m12 .
🤝🏻
Well mine does on both chargers the battery date was 200423 so it is out of warranty
It was worth to try at least
Does not work on mine. I have both chargers. 6.0 battery
Thanks for letting me know🤝🏻
Well I will be damned this worked !!! Thank You 2:40
😜🙌🙌🙌
Mine is problem with Milwaukee 18 volts battery 8 amp! I tried either two different charger, One charger is original and other charger is rapid charge! Either way it’s still blinking red and green light!!! ? Is that battery bad?
That battery must be bad buddy
Did not work for me but thanks I will return to Amazon
🤝🏻
Fake news mine still does it
Thanks for sharing🤝
Tried it this does not work..