Question about Makita 2 Bl1830 18v Battery,dc18ra Charger Lxt Fr Drill

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

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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/

Posted on Nov 26, 2012

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Same here I have 2 new batteries and one older version they're all reading red and green flashing lights guessing the Chargers the problem

Posted on Jan 27, 2016

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6ya6ya
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Posted on Jan 02, 2017

  • 66 Answers

SOURCE: 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

Posted on Jan 10, 2009

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

hawk127311
  • 350 Answers

SOURCE: dc1804f charger

If you have tried discharging the batteries prior to charging them already with no result and from what you describe in your post, then I would have to say the charger has issues. Go to HD or Lowes (not sure if Lowes carry Makita) but another charger and test your battery again. If you get the same fault, there is an issue other than the charger, if not you need a new charger anyway. If you get the same fault with the new charger, you can always return the new one. Short of opening up the charger and using a volt meter, this is the easiest way to test to pinpoint the real problem. I hope this helps and good luck!
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Posted on Nov 06, 2009

  • 165 Answers

SOURCE: Brand new Makita DC18RA charger wont charge the batteries.

Return to store for replacement.

Posted on Feb 27, 2010

  • 2 Answers

SOURCE: on the charger flashes red

Your battery is shot. $75 - $100 for a new one.

Posted on Oct 11, 2011

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Hi, My Makita DC18RA won't charge anything it just flashers the red and green light simultaneously it is not the batteries because I can charge them fine using anther charger. What is wrong with the...


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Jan 19, 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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