I appreciate your video because I'm having problems with a 12 HD Milwaukee battery and they don't honor their warranties... I'll definitely be using your troubleshooting techniques... I appreciate your help. The only negative thing I would say is that loud music is irritating and unnecessary... it's totally okay to just have the natural sounds, or no sound. Thank you again

5:01 Pro tip, before soldering: clean the solder joint first (i.e. scratch pad and isopropyl alcohol), and then apply solder flux to the joint

Today I successfully replaced the PCB on the Milwaukee M18/5Ah batteries. When I soldered all the contacts and pressed the control button, none of the LEDs lit up? But when I put it in the charger the battery worked like new because the Milwaukee Intelligent Charger unlocked the battery!

When soldering, apply heat to the metal and apply solder to the metal, not the tip, also keep it on till it flows, don't keep lifting the tip.

Great videos on the m-18 battery testing. Also thanks so much for doing the CC's . It really helps.

Thank you Sir for the tutorial video. It solve the problem.

Do you could share some info or link about your DC capacity instrument? Thanks in advance 👍

I have a 5.0 aH Milwaukee M18 battery that when placed on the charger, the GREEN light illuminates. However, when I press the button the 1st bar flashes 7 times VERY FAST! I just checked it with my voltmeter and received a reading of 4.07 when I tested it as instructed in this video with a voltage reading of 16.30. The only thing I noticed was that one of the contacts on the right side if looking straight down on it, appears tarnished (darker in color). I used a copper brush on it and returned it to the charger. Thoughts? THANKS!!!!!

So if the outside contacts are the main output input .... What are the middle contacts for.

Is there a way to make/hack the M18 so can swap out the cells by simply inserting new batteries (cells) only by hand... Like changing batteries in a tv remote?? I want to get the Milwaukee Top-off tool but only if I can swap out the batteries, and quickly and easily (no spotwelding or anything like that) so have endless power. I have bunch of 18650 cells around so that would be awesome. There has to be a way! .. in other words, way to hack it so can insert new cells simply like swapping batteries in a tv remote.

Είσαι καλλιτέχνης!!👏👏 Πολύ ωραίο βιντεάκι!!!

I have the compressor and 9ah batteries only work intermittently or not at all but they work in my other tools everytime? And if i run a 9ah batt on my grinder then put it on the compressor it will work.. then the same battery after a few minutes stops working on the compressor again. My 12ah batt works everytime in all my tools??

hi do you repair v28 as i have 7 that have stood for years and now flash red green on charger im in great britain thank you

Thank you for this video. Very helpful

Why can you measure at output pins?I thought needs to be connected to drill with sense wire causing mosfet to then switch voltage to output pins. That's what my v18 drill battery does.

only reason I'm watching this. I just tossed a brand new battery pack after I smashed it with a sledgehammer. this is the second time in a row. take a brand new battery fully charged and it cuts out every 30 seconds of use. Nobody and I mean NOBODY fixes or honors the warranty for M18 tools and batteries. Milwaukee was awesome a few years back. but within the last couple years, it seems like the quality and workmanship has greatly diminished. the last time I called Milwaukee tool company to ask about returning or exchanging it under warranty. The person I spoke to only gave me a little runaround story and I said "they're a big expensive waste of my time and money".

I have a M18 that flashes single red light, when placed in the charger the led goes green immediately, all cells read 4.1v. Why will it not show full when checking charge level

I already change new bms, but my battery can't show level of battery and can't use. Please reply me back how can I do?(my battery at p+,p- have 21 v)

How the batteries connect to each bank?

Does it use t8 or t10 safety screws ?

Hi have a M 18 battery and following your steps to test the battery the fist cell is reading .236 all the others are reading 3.4 it wont work when trying to charge it

The solder will flow better if you sand paper the strip first..

I have a M18 XC 5.0 battery I am troubleshooting. It's lightly used, maybe 4 years old. Working fine one day, next day 1 bar flashed like it was dead. I didn't leave it dead. Put it on the charger and charger goes green. Battery thinks it's dead, charger think's it's full. I connected this battery to a good battery (+ to +, - to -) to "reset" the battery. After doing this a couple times the bad battery showed 3 bars charge. Great? Ran a tool for less than a minute then stopped. Charger still goes green instantly. I'll open it up and check what you did here. Thanks for the video! Any thoughts what my issue is?

What is the 3rd most common issue you mentioned? Is it the thermistor? How do you know when the thermistor is bad? Mine is reading 43Kohm at room temps, and it does react to temperature changes, but i dont know what value its supposed to be.

I have a m18 battery. When i connect it to the charger it blinks green then stops on green. I put it to my impact and works for a bit then stops and you press the battery button and doesnt show any bars lit.

Good video, I like it. Thank you

Awesome video

So I've been looking around on some videos show keeping a voltage source on the BMS during disassembly of all cells. Is this true ?

Question for you? What if you have a twelve volt Milwaukee batter that does ether same thing in the charger that your 20 volt batter was doing in the charger. I bought a tool that uses the 12 volt batter. I also bought four spare batters for it. I put them in the charger and they would blink red and green. Could you do a video showing that hack.

Great video!

What are the three terminal taps in the center of the battery for ?

Thanks for the useful video! I have a M18 12.0 pack that shows 19.7 volts at the terminals and charger indicates fully charged (green light) but the battery will not operate any tool??

I have a question, is this the reason why the battery fuel gauge indicator, is not completely full? if so by doing this, after it's charged will indicate full? I'm having many issues with not just the m18 but they say they are full on the charger but the led indicator doesn't show full on the battery and you can tell the performance is usually in power and run time '

I have a 4.0ah battery with 3.9v in the cells and 20.1v overall. No bad joints or connections when I put it in a tool it will put on the light but not run the tool any ideas what could be causing this.?

Informative video despite the nauseating music.

That "background" music is so irrelevant and irritating.

Hello! You have a very nice channel. What equipment do I need to repair batterys?

All the cells were fine , what are you testing for

Quick! Someone get this man a big bevel tip!

Question 1. Why 300hz on the PWM? Question 2. Do cells not fail in your opinion? you only discuss balancing techniques. Thank you!

"Слабое звено" в этих акках - платы. У меня сейчас две платы - одна версии 02, другая версии 05. В пятой сразу в двух дальних от разъёма схемах контроля напряжения на аккумуляторах, входное сопротивление порядка 6 ... 12 кОм, а в версии 02, только в дальней. Соответственно в ноль были "посажены" 4 и 2 аккумулятора. Восстановить их не удалось. В исправных схемах контроля напряжения и аккумуляторы исправны, и входное сопротивление "бесконечное". Явно в схеме используются детали без надлежащего запаса по напряжению...

Great vid! Where did you buy your torx bits?

Would be nice if you mention what type and # of the bit to open it..

Следующий раз когда я буду преживать о своём произношении английского я буду смотреть твои видео и радоваться что я не один такой 😁🤗 Когда паяешь эти пластины используй ортофосфорную кислоту. Помажь ей место пайки

Two pounds of solder should do it !!

Sorry sir, I want to ask, I am an Indonesian service mechanic, I have a Milwauke battery when the charger flashes red green red green indicator flashes, the battery is damaged or the charger module is damaged, thank you

The cells is 18650 or 21700?

Soldering school will help a lot.

How much are your repair cost

Very thick nickel plate for drain 20 amp current.

Aluminum ducting tape works if space is an issue.

My main problem with 4 of my Milwaukee batteries is they wont charge any more

Vorrei aggiustare due batterie da Milly Walker

Паяльный кислота мэйк ё джоб э мост изи зэн ю дюинг...

thanks i have fixed 4 batteries same issue spot welder looks fine but loose couple of them no go

Need caption dudes speaking jibberish

Shit can the music, it's annoying.

great video, annoying music

Easier to drain all cells to zero, Then charge fresh via jumping from another M18 battery.

Talented!