Milwaukee M12 battery not charging repair

[@kytrex]

All this is completely unnecessary especially if your battery is relatively new. I don’t care if you have an M 18 or M12 battery, if they are relatively new meaning, they haven’t gone through hundreds of charges try this first. I’ve had about 4M 12 batteries do this and different lengths of life and I was about to send them all back because they were less than nine months old, and I’ve only used them maybe a dozen times. 1. Plug your charger into the wall and pop in your battery. 2. Wait until the red and green lights flash rapidly, then unplug the charger from the wall (even after you unplug the charger from the wall, the red and green lights will still blink rapidly for a few more seconds 3. Once they have stopped blinking, plug the charger back into the wall and repeat the above steps 10 times. Once you’ve done it 10 or 11 times the charger will display a solid red dot indicating that the battery is now charging. This has worked every single time and although I’ve never had a problem with an M 18 battery I’ve seen KZbin videos of people doing the same thing to an M 18 battery and it works flawlessly. I can’t remember what happens but I think it has to do with leaving the battery in the tool for too long and letting it sit unused for an extended period. Now I take all my batteries out at the end of the day or within a few days and even though I don’t charge them, I just put them in a bag instead of leaving them inside of a tool.

[@notashton.]

I'm gonna try this after this shower

[@alexramos6555]

I tried this method and i did not work for me, I even repided the method for about 15 times, there is clearly an issue with a lot of m12 6.0 batteries i had this issue in 3 of my batteries one of the pretty new only used it 2 times and issue stared.

[@schutzhund3933]

This didn’t work. The batteries weren’t left in charger. Just bad batteries. Two batteries did the same thing and this didn’t help m12. I only used it two times.

[@TheTruth10153]

Thx this worked for me …im guessing the 6.0ah batteries drain a little below the chargers threshold so it shows faulty …and this method gets the battery up above the low

[@z789m7]

@kytrex The best

[@h8GW]

Next time use flux and/or lightly sand the cell terminals. It looks like you have some cold solder joints there.

[@hectordelatorrejr785]

Great video. Going to try with my 6.0 .

[@epicviking3164]

Any luck

[@misterfee6467]

It’s bc the battery drained you can easily find out if it’s over drained by jumping it with a fully charged same volt battery

[@renec0327]

Whats about 3.1 v ,still holding the charge, or no more cause i check my battery pack and the voltage is 3.1 v

[@Mack_Dingo]

6:05 How did you take the top off?? every video on the internet skips that part.

[@TECHIELIFE]

If I remember correctly, it's jammed in there pretty good. Su just pull hard.

[@adamprontnicki8720]

It’s a T10 not T8

[@-fazik-3713]

TS10 to be exact ;)

[@maktheturd6220]

not great video since it's missing video of how he took it apart.

[@GrimReaper-rr8xh]

I dont think to just replace it right away and at the same time with different brand.. you should balance it all first before putting it altogether.. be careful in dealing with batteries not all batteries have the same chemical composition..

[@Ozzierob]

Easy you assemble them then plug it into the tool. Hold trigger, batteries equalised.

[@maxjaeger5899]

How do you test the M12 charger? Not the battery, The charger? Thanks

[@jonanderson5137]

These 6Ah batteries are junk, great run time but they all fail very quickly

[@nigelhosein7822]

Hi good video I have a similar battery but runs down fast and it's al.ost like new and the older one had more run time any thoughts

[@superburritotime8720]

No offense, but do not follow This video. Soldering is a very weak connection, and one little dribble of solder on a contact that hasn’t been roughed up for maximum adhesion is a terrible idea, and a great way to cause a ton of resistance and heat and potentially a fire. Spot welding with new nickel strip is the way to do this properly.

[@TECHIELIFE]

I do agree, but at the time I didn't have a spot welder.. besides I've been using the battery with no issues. Thanks for the comment.

[@wongwong2631]

Flashing red light how to fix

[@mikebaker3662]

What brand soldering iron?

[@TECHIELIFE]

I'm using the radio shack Proline 25w But I think this would work for you: amzn.to/3KqXOOp

[@wslytoy]

Where is a good place to get replacement cells for these packs? I saw that they're Samsung cells... Would it be best to go with Samsung or another brand?

[@TECHIELIFE]

I would say ebay is good.

[@TECHIELIFE]

I don't think it's that much of a difference to go with diff brand

[@-fazik-3713]

@@TECHIELIFE There is quite a difference. Go with Samsung.

[@MyBigThing2010]

IMR batteries is a good source... Ebay is sketchy

[@davidbarker3591]

Go with the 30q or 25R

[@vangkhaivilay]

that's a lot of work time money, mind as well just buy new, thanks for info.

[@TheDwightMamba]

That's a $130 battery.

[@MyBigThing2010]

Not really when you consider the cost of a new battery is 120÷ and popping in a repurposed cell is free