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

2 Answers

Is it possible to repair a defective lithium ion battery? I have 3 batteries that won't charge (red & green flashing lights). I opened them up and found that 9 out of 10 cells are good in each battery, showing about 3.5 volts when tested. I tried swapping out the bad cell in one battery pack with one of the good ones in another battery pack and my "new" battery with all 10 good cells still reads defective on my charger. Is there something I can do with the circuit board to make it stop reading as defective on the charger? I've soldered on circuit boards before but I don't want to start messing with this if I don't know what needs to be fixed. Like zzfiremanzz commented, $100 per battery is a lot when the battery pack fails immediately after the warranty is up and I'd like to be able to steal the good parts of my 3 bad batteries to make (at least) one good one.

Posted by on

  • bjones004 Mar 19, 2011

    Not a problem with the charger. I actually have 3 chargers and 7 batteries (3 of which are currently showing as defective on each charger) My remaining 4 batteries charge fine on all of my chargers. Thank you for the suggestion though, tvenetis.

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

This is a known problem with BL18XX batteries. Makita designed the battery supervisory circuit to run off only one of the 10 cells, so leaving your battery uncharged for a long time eventually discharges one cell much more than the others. When you put this battery in the charger, it reports that the battery is defective. Another Makita fault is that the intelligent (DC 18XX) chargers will only attempt to charge a 'faulty' battery 3 times, then they will re program the micro in the battery to lock out charging for good. The only solution is to buy 3rd party replacement battereis that don't have the faulty Makita supervisory circuit.

Posted on Sep 05, 2012

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sergeant:

    An expert that hasĀ over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 250 Answers

Maybe there is something wrong with the charger itself. If you have a friend that has the same drill try to charge the battery on his charger.

Posted on Mar 19, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Just bought a Ruobi drill with 18V Lithium Batteries. Been chatging for over an hour. Still not charged. Just the bottom Green light stays on. Is this normal? How long does it take?


The Ryobi charger will flash green as it charges and then remain steady or slowly flashing green when fully charged. Flashing red means testing and if it remains steady or slowly flashing red it is defective.

Apr 11, 2013 | Ryobi Two 18V Lithium-Ion Batteries +...

1 Answer

Makita battery charger wont charge


If both lights on the charger are flashing it is indicating you have a bad battery and the charger will not charge the battery. The charger has circuitry that tests the battery and if it 'thinks' the battery is defective it will not attempt to charge it. The only way to verify whether it's the battery or charger is to try charging your battery on another charger or try charging another battery on your charger. Most of the time it's a bad battery.

Aug 02, 2012 | Makita DC18RAX230 230-Volt LXT Lithium-Ion...

1 Answer

Are all the Lithium batteries working like this. Mine work for a short time then stop dead. Wait a while then they will work again. Really a pain when you are working trying to do somthing and have to run...


I use the Ryobi Li-Ion tools the L-I batteries will cut off when they get to a low charge level this is to protect the batteries Li-Ion batteries life span is shortened when fullt discharged so when the tool suddenly stops put the battery on charge,also if the battery has a charge indicator light for a more accurite idea of the charge (green is charged,red discharged) hold the test button on then run the tool the light may go from green to red if it does that shows the the charge is about depleted if the light stays green you have a little run time left.

Oct 25, 2011 | Ryobi Two 18V Lithium-Ion Batteries +...

4 Answers

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...

3 Answers

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

When the battery is in the charger it flashes red & won't charge, have no idea what problem is! Have casio exilim lithium ion NP-20 battery & a casio exilim 7.2 megapixels camera. Can't turn camera...


I called casio and they told me that when you have a red flashing light on the charger it means the lithium battery is no longer any good. They offered to send me one free of charge. It's been several weeks and I have yet to receive it.

Jul 08, 2009 | Casio EXILIM Digital Camera

Not finding what you are looking for?
Makita 2 Bl1830 18v Battery,dc18ra Charger Lxt Fr Drill Logo

1,035 people viewed this question

Ask a Question

Usually answered in minutes!

Top Makita Drills Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

John Trevino

Level 3 Expert

1383 Answers

yadayada
yadayada

Level 3 Expert

74945 Answers

Are you a Makita Drill Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...