Makita 18v battery management board What you need to know, faulty makita battery repair

Makita 18v battery repair makita battery management board repair. why its not worth trying to replace the pcb battery management board In a 18v makita batter

#makita
#makitabattery
#makitarepair

[marceldaniel]

Bring on the batteries repair videos, proper hands on. 👍

[nerminm]

No one knows enough about these batteries, I think Makita does a pretty good job of hiding the secret about how their BMS (Battery Management System works. That being said the u-tuber here is right when he said it doesn't make much sense buying one on ebay or elsewhere because it might not fit the case or it might not work at all. But what he doesn't mention is that someones the cells are perfectly balanced and nothing is wrong with the cells at all but it still won't charge and in my opinion the BMS is faulty and at this point it is perfectly fine to find alternative ways of changing and using these batteries. I for example don't care about their BMSes ones they go bad. I make it work my own way and charge it my own way, have yet to have any issues with it.
Makita uses very good cell but I don't like their BMS!

[techytools]

can you explain yellow connector in makita battery. and purpose of it. can we use this to charge battery with diffrent matheds and ballacne cell?

[ChrisLivingInYork]

I’ve got a 5amp makita battery up until yesterday was working fine. When I press and hold down the button for the battery indicator light it counts down from 4 bars to 1. Is that a fault which is worth fixing?

[tombowman]

This is exactly the subject matter i was looking for! Thanks for a great video!

I'm charging each cell of a Wheatley 6ah pack that has gone dead in hope that when they are all charged to the same voltage the Makita charger will charge the pack again... So far I'm at 3.43v - 3.7v. trying to get them all up to the 3.7v mark. When I started 4 if the cells where reading a 0 voltage. But they all seem to be holding a charge now. The pack indicator is now saying 60%. Is this attempt likely to work or am i wasting my time?

Meany thanks advance 🙏

[mohammadshabirshabir]

If I sent you my old dead battery. Will you repair it for me and how much will it cost me please .thanks

[lex.]

Halo! Give me a link to the board please. Thank you!

[martinhyska]

Do y know if is possible add to makika board 6xlifepo battery? it has 6x3.3v so its around 20v and its similar like lion, but 4xmore life.

[spinnanz]

If the pack hasn't been bricked, can you remove the old cells and replace them without this bricking the BMS?

[mariusz]

Hello, the BMS battery board does not remember anything, it just informs about the error by blinking the diodes, the locking process is performed by the charger

[Jonathan-rzjk]

My yellow bit on a Makita battery is broken can this be replaced ? Thanks

[jamesaddisonn]

Check fuse with multimeter 2 white blocks next too eachother

[aliancemd]

Those eBay boards look very basic. I ordered some from AliExpress that have 4V/8V/12V/16V voltage sensing and 2 65C thermal switches - there are options out there to build Makita batteries better than Makita for way cheaper.
Got some inspiration from Bosch batteries(which seem to be built significantly better than all the other manufacturers) and going to connect these with 0.1mm copper(sandwiched with nickel, because I don’t have the tools - Bosch seems to solder the 0.3mm copper with a laser, creating A Lot of connection points/surface with the battery).

[daanhendriks]

Hi, i have a question. My batteries blink red and do not work. I took them apart and the cells measure 20 volts on the side of the pcb . But When i measure the batterie terminals which connect to the tool i only measure 1.4 volts. What can be the issue?

[angelafarrugia]

I BOUGHT NEW 18650 CELLS AND A NEW BMS ( FROM EBAY). I ASSEMBLED EVERYTHING PROPERLY. WHEN I PUT THE BATTERY PACK ON CHARGE, AFTER ABOUT 20 SECONDS THE CHARGER INDICATES THAT THE BATTERY IS FULLY CHARGED . BUT IT DID NOT. SO WHAT'S THE PROBLEM? THANKS.

[qrsimon]

Pink/red wire is for 7.2v(on 14, 4 total), so the other way around. Not sure with 18v though

[joemarkey]

I literally ordered a pub today before I watched this 😭

[vsvnrg]

your bonfire at 1:18, thats a fast charger isnt it? thats probably why it got cooked. genuine battery on a genuine charger. the customers want a fast charger and the competitors make fast chargers so makita makes fast chargers. i saw a video by a repairman who claimed that fast chargers shorten battery life. so i put mine away and only use the slow chargers i got given for free. i never used them because they were slow chargers. who wants slow chargers? i do now.

[chiphill]

I still can't find a decent video on this subject. Does anyone really know anything about these batteries? Lots of rambling and hand waving but no information.

[Nicedesk]

Your burnt/melted battery looks like a knock off brand, not a real Makita battery. Li-ion is dangerous, stick with reputable manufacturers to avoid catastrophic fires.