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Flashing red light charger

Hi all, I bought a Makita drill from bunnings and have hardly used it, after 2 months all batteries were showing red/green flashing. same happens at my mates who bought it from bunnings and also a work collague. my batteries were charging initially and never dropped it and hardly used . I reckon there might be more then just a bad battery, HAS ANYONE LOOKED INTO whether it might be a faulty product ? maybe a certain model or period ??? regards RHINO

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I assume you have the Lithium slide batteries, if so the most likely problem is faulty batteries, Makita had a high failure rate with these batteries, take them back with your proof of purchase and it is quite likely they will be replaced under warranty

Posted on Apr 11, 2014

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My dc18ra makita battery charger flashes red and green lights no matter how many bateries i try


The pcb inside the battery has a microcontroller that monitor the charges and charge cycle. When the cell falls below a certain voltage, it will instruct the charger not to charge and will show with a red-green flashing light. If the battery has been tried 3 times in succession then the pcb will brick itself from the makita charger. So first replace the bad cells. There are 2 solutions at this moment: charge with a 3rd party lithium charger like the imax b6 or replace the pcb with a working one. check out my blog on http://mkbl1830.blogspot.com/

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Makita DC18RA Makstar Li ion Charger three lights


Alternate Red and Green flashing means bad battery. Buy a new one, or take it to a Makita Service center for replacement if it's under warranty.

Normally the yellow light indicates hot battery, but it could also mean dirty battery contacts so the heat sensor can't be read, or that the fan is clogged with dust and unable to cool the battery. The manual says let the battery cool and try again. If the yellow still flashes, it's contacts or the fan.

Read the manual online at:
http://www.makita.ca/data/upload/accessorypbim/417_im_english.pdf

Oct 28, 2011 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

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Hi have a makita bhp 452 drill under a month old changed the battery twice still comes up with red green light?


take it back for warranty replacement, I would also take the charger to ensure it is not at fault.

Aug 03, 2011 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

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Hi i have a makita charger that flashes red and green indicating battery is no good but the batteries are perfect they charge fine on other charges an i even tried it with a brand new battery it starts...


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

Feb 02, 2011 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

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I have makita bl1830 battery 18volt it works fine but will not charge, charger lights flash red and green therefore battery will not charge


If both red and green lights are flashing after you put the battery on the charger, the charger is reading the battery as bad or defective and it will not charge the battery. It may be because there is a short in the battery, one of the cells is bad or the battery is just old and won't charge anymore.

Feb 01, 2011 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

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Hi both red and green lights are flashing and it wont charge battery bl1830 lith ion


If both lights are flashing it means the battery is defective so it won't charge it. By defective it could mean the battery is just worn out or there may be a short in the battery. If the battery is under warranty you can get it replaced at a Makita Service Center, if not you have to buy a new battery.

Sep 13, 2010 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

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Red and green light flashes alternatingly with only one of my batterys of my makita 18v li-ion fast charger


unplug charger to let it reset. plug back in and then try again, if it still flashes red/green that would indicate a battery failure. check for warranty replacement.

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MAKITA LXT BL1830 18V LITHIUM-ION 3.0AH BATTERY


If the charge count on the batteries is under 300, Makita will replace them. Makita has a known defect in this battery that causes the battery to shut down before it is dead. So as of now they are exchanging ones with low use.

If they are truly defective and makita won't replace, you have to open them, find the dead cell or blown fuse, and replace. Search youtube makita battery for a video on repairing this battery. But once the red and green lights on the charger flash, the the battery can't be charged on a Makita charger -- it's been locked. So use a third party charger.

Apr 18, 2010 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

1 Answer

MAKITA LXT BATTERY CHARGER


hey
flashing orange=cooling abnormality.
you need to wait for the battery to cool.

see my mod page, it has all light explanations in it.
Have fun
Avi

Jan 09, 2009 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

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