Why does my Mikita charger make a beeping noise and the battery doesn't charge ???

6ya staff

• 2 Answers

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Posted on Jan 02, 2017

SOURCE: makita dc1804f charger will not charge new i-mh 1834 18v battery

I think your tryiong to charge NIMH batteries oon a charger designed for Lithium Ion batteries. With all the new style batteries such as NICAD, NIMH and LI-ION, charging becomes difficult. Most chargers pre NIMH and LI-ion, were designed for NICAD's. The best advise, match your batteries with the correct charger

Posted on May 23, 2008

SOURCE: Battery Issues

When Li-Ion batteries are discharged to a too low voltage (below 2,75 V/cell, in this case 13,75V) the charger will assume that the battery is damaged, and will not charge the battery. First measure the battery voltage with a volt meter, if the voltage is significally below the 13 V the battery are no good. If you have a reading of lets say around 10 V, you can raise the voltage shortly on the battery, by jumping it with a fully charged battery. Connect the "-" poles on each battery. After this, shortly connect the "+" poles, for no more than 5 seconds,disconnect the wires and immediatly put the battery in question in the charger. If it starts charging, every thing if fine. If not, try the process again, you might wanna recheck the voltage if it rises.
Please be aware, that over discharging Li-Ion batteries, will lead to damage of the Li-Ion cells, which results in loss in capacity, therefore, if you are not to use your Li-Ion tools for a while, make sure the batteries are fully charged.

Hope you guys could have sucess with the above

Best regards
Soeren

Posted on Jun 28, 2008

SOURCE: Makita LXT 18V will not charge

looks to me like a defective batterie

Posted on Aug 21, 2008

SOURCE: Makita 18v Lithium-Ion BL1830 Battery Won't Charge

If you have been a bad boy and managed to short the battery by using it for non-proscribed purposes, the fusible link will blow (kind of like a fuse) To fix it, open up the battery (use a Torx 10 security bit, or a small flathead in a pinch) On the battery connection nearest the spring-loaded white catch there is a small bridge of metal with a hole in the center. If this is melted you can solder it back together by sanding the two pieces and putting a glob of solder on them. This will void your warranty (duh!) and remove the battery's fuse protection, but it WILL work again. If the link is intact and nothing else is obviously wrong, you almost certainly have a bad cell. I recommend pulling out the bad cell ( it will be the one that does not read between 2.5 - 4 vdc) and replacing it with one from another dud battery- this requires some fudging and re-soldering. Or do what I did, pull the cell, toss the electronics and the short pink wire, add a cigarette lighter socket and voila! you have a portable power supply giving around 14 volts. Charge it up by wiring two cigarette lighter male ends together (check polarity , + to + and - to -) and plug it into your car, but only while it is running or you will be charging your car battery with it! Hope that helps.
Matt Binns GiantGlobes.com

Posted on Aug 18, 2009

David Ford

• 2176 Answers

SOURCE: hi i have a makita charger that flashes red and

there is a problem with the charger and given the age I would take it to an authorized dealer and get a replacement. If you give me your general area I will try and locate one close to you. Please before voting if you need more assistance let me know. Thank you

Posted on Feb 02, 2011