The problem you're having is that the batteries are now "locked" by the BMS chip inside them. When you try 3 times unsuccessfully to charge a battery with a genuine Makita charger, the charger will "lock" the battery. Even though the voltage is back to a normal range by "jump starting" it, the BMS is still locked and will be forever. The only option moving forward is to replace the BMS inside the battery. The key here is that attempting 3 times in total to charge a battery, where the charger gives an error of some sort each time, after the third it will permanently lock the battery. One thing to try is an aftermarket Makita charger - they don't refuse to charge a "locked" battery and your tools will function but it's going to essentially bypass one of the battery protection mechanisms (the lockout after 3 failed charging attempts)
Ive got now 3x batteries who arent older than 2 years and i maybe used them 20x times each over the years in like 1 week all of them got that light moving left and and right error. Ive used original charger aswell aftermarket and still nothing. Ive cleaned the ports with compressor and nothing..
@@Earlhelder Used them daily framing houses and eventually had to replace them whether makita or aftermarket they all seem to have a lifespan and wear out. There are better aftermarket varieties (nothing as good as the originals)
I took bad drill. Cut the bottom off. Pulled th wires through. Hooked them up to my car charger and then they would charge now when ever I need to fix a battery I have the tool I need
Ive got now 3x batteries who arent older than 2 years and i maybe used them 20x times each over the years in like 1 week all of them got that light moving left and and right error. Ive used original charger aswell aftermarket and still nothing. Ive cleaned the ports with compressor and nothing..
If you are handy you can open one and check voltage between cells, you will find some are much more discharged that otherones. Make it even and thats it. Unless voltage is close to 0. Than you must change all cells (best way to fix) Be carefull, fire is not extinguishable. You may have metal bucket and sand beside.
How about getting a Milwaukee to Makita adaptor and a Milwaukee charger (£45 for them) and use Milwaukee batteries? If Makita batteries are poor perhaps this is the ultimate solution.
I am surprised that you , as electrician , are unaware that li-ion tools bateries have a protection circuit which tells charger not to charge a specific baterry once a fault has beeen detected. That instruction is written permanent inside battey eeprom. To fix that you will need to rewrite eeprom with a virgin eeprom content. Jupstart hiigh quality locked li-on batteryes will never work since all have this proctection included. You did not reveal anything in your video. It is just a click-bait title IMO. Your video proves once more the difference between electrician job vs electronist job. No offence.
two diodes blinking like that on charger means that cells are not ballanced. So there is too big difference between them. You need to open battery and measure each cell. Possible best way to fix it is to change all cells to brand new. 4Ah and less have kind of dumb BMS and allows for that easy. If i'm not wrong from 5Ah and up there is a smarter BMS and can couse some issues.
Nah, the best thing would be to discharge each cell (don’t just buy new ones you doughnut, that’s not fixing anything, old New Parts Norman over here) to its safe working voltage then recharge. That’s the simplest way unless you have access to a power bank and want to chase the cells around until they’re within range of each other. A very stupid way to do things but less stupid than buying new cells to replace perfectly good ones that have fallen out of balance. You boiled egg of a man.
that is the initial cause of fault. Once A unballance has been detected , the info is written into battery eeprom. Any original makita battery will refuse to charge that battery in order to avoid battery to explode. The fix is to identify the bad cell, replace , the rewrite the eeprom.
Well, it seems like this video really left you with more questions than answers! Don't worry, I'll make sure to include more helpful content in my future videos. Stay tuned!
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The problem you're having is that the batteries are now "locked" by the BMS chip inside them. When you try 3 times unsuccessfully to charge a battery with a genuine Makita charger, the charger will "lock" the battery. Even though the voltage is back to a normal range by "jump starting" it, the BMS is still locked and will be forever. The only option moving forward is to replace the BMS inside the battery.
The key here is that attempting 3 times in total to charge a battery, where the charger gives an error of some sort each time, after the third it will permanently lock the battery.
One thing to try is an aftermarket Makita charger - they don't refuse to charge a "locked" battery and your tools will function but it's going to essentially bypass one of the battery protection mechanisms (the lockout after 3 failed charging attempts)
Nice, very interesting to know
If it is only charged wrongly 2 times, and then fixed by replacing the broken cell, will the count then be reset again?
Ive got now 3x batteries who arent older than 2 years and i maybe used them 20x times each over the years in like 1 week all of them got that light moving left and and right error. Ive used original charger aswell aftermarket and still nothing. Ive cleaned the ports with compressor and nothing..
@@Earlhelder Used them daily framing houses and eventually had to replace them whether makita or aftermarket they all seem to have a lifespan and wear out. There are better aftermarket varieties (nothing as good as the originals)
I took bad drill. Cut the bottom off. Pulled th wires through. Hooked them up to my car charger and then they would charge now when ever I need to fix a battery I have the tool I need
Bms protection has disabled the battery, time for a replacement bms off aliexpress
linK?
You need to open the battery and see which board it has as there's a few different designs
Match the board design and order the correct one
Google makita battery bms and they will all come up
I’m so annoyed. 2 5Ah batteries died on the same day! Starting to rethink the benefits of battery tools, at least makita ones.
Ive got now 3x batteries who arent older than 2 years and i maybe used them 20x times each over the years in like 1 week all of them got that light moving left and and right error. Ive used original charger aswell aftermarket and still nothing. Ive cleaned the ports with compressor and nothing..
If you are handy you can open one and check voltage between cells, you will find some are much more discharged that otherones. Make it even and thats it. Unless voltage is close to 0. Than you must change all cells (best way to fix) Be carefull, fire is not extinguishable. You may have metal bucket and sand beside.
How about getting a Milwaukee to Makita adaptor and a Milwaukee charger (£45 for them) and use Milwaukee batteries? If Makita batteries are poor perhaps this is the ultimate solution.
Good idea
Eww brother nooo.......no milwaukee eww 😂
where are you placing the wires??
On the battery terminals
I am surprised that you , as electrician , are unaware that li-ion tools bateries have a protection circuit which tells charger not to charge a specific baterry once a fault has beeen detected. That instruction is written permanent inside battey eeprom. To fix that you will need to rewrite eeprom with a virgin eeprom content. Jupstart hiigh quality locked li-on batteryes will never work since all have this proctection included. You did not reveal anything in your video. It is just a click-bait title IMO. Your video proves once more the difference between electrician job vs electronist job. No offence.
two diodes blinking like that on charger means that cells are not ballanced. So there is too big difference between them. You need to open battery and measure each cell. Possible best way to fix it is to change all cells to brand new. 4Ah and less have kind of dumb BMS and allows for that easy. If i'm not wrong from 5Ah and up there is a smarter BMS and can couse some issues.
Nah, the best thing would be to discharge each cell (don’t just buy new ones you doughnut, that’s not fixing anything, old New Parts Norman over here) to its safe working voltage then recharge. That’s the simplest way unless you have access to a power bank and want to chase the cells around until they’re within range of each other. A very stupid way to do things but less stupid than buying new cells to replace perfectly good ones that have fallen out of balance. You boiled egg of a man.
that is the initial cause of fault. Once A unballance has been detected , the info is written into battery eeprom. Any original makita battery will refuse to charge that battery in order to avoid battery to explode. The fix is to identify the bad cell, replace , the rewrite the eeprom.
WTF.... you didn't show anything... it IDIDN"T WORK... EVEN ON YOUR OWN VIDEO... !!!! why keep this non educational video???
Well, it seems like this video really left you with more questions than answers! Don't worry, I'll make sure to include more helpful content in my future videos. Stay tuned!
Try the TH-cam Video „reset Makita bms“
How much does it go to waste Makita how useless are your batteries lol
Thanks. 10 minutes to tell me one thing…..
You're welcome