20 Most Recent Makita 18V LXT Lithium - Ion Cordless Impact Driver Kit Model BTD140 - Page 3 Questions & Answers

This is more then likely caused by the plastic gears inside the drill wearing down. Makita may replace/repair under warranty depending on when you purchased the drill.

Really, this is not something that can be changed easily, just buy a 110 charger...

Hi,
Yes.... the bits can "spin" just a bit and will jam in the chuck sometimes...
Grab the bit with a large pliers and spin it backwards with a hard jerking motion... then the bit will release...you can also use the pliers to get a better grip on the bit to pull it out easier when the release is pulled back...
But it is just twisted a bit in there and you just need to twist it back again...

heatman101

replace charger/ burn or busted

You need to go to Makitatools.com and voice your concerns, this is a technical support site and we don't have any affiliation with the tool companies and their promotions. You can also call them at 1-800-4MAKITA and resolve the problem

if you need a manual you can go to Makitatools.com and download one if you have a problem let me know and I will find another source.

If the battery didn't take care of the problem check the brushes next. Take the two screws out of the back cover and check both brushes (Part Number 194427-5). They should be at least 1/4" long and evenly worn, if not replace them. If they're excessively burnt or chipped and broken, check the armature before replacing them. If the commutator is damaged it will only shorten the life of the new brushes.

here you can find parts diagrams very useful eReplacementParts.com : Power Tool Parts and Tool Repair

on my charger (DC18SC) alternating red and green dual flashes mean a defective battery.
http://ubermanuals.com/product/makita-dc18sc-8866 also same for the DC24SA

I couldn't find a Makita DC18SC manual for you, but here is a DC18SC Makita breakdown for you with a list of parts for future use.

there should be a back cover that needs to be removed to expose the brush ring, It would seem unusual to have them wear out so quick but take a look anyway.

Worn brushes or wrong trigger.

Depends on model you have. There are 2 brushless models - BTD132 (14.4V) and BTD144 (18V) - both have big BL letters on housing. According to your picture, you have BTD140 which has brushes. When you open user manual, you can find section dedicated to changing brushes. In case it does not help, you migh want to check trigger. Juraj

If there is a way to get the case open, you can check, but I don't think there is. Those things are pretty finicky and running them at 220 volts just doesn't help , even with the adapters. We went over to Spain to build a house a few years ago and they warned us, no cordless tools. Everything we brought over there was air powered or run off our own generator. So, I think you may have fried your charger, all it is is a transformer that turns the 110 volts ac into 12, 14, 18 volts dc, whatever the batteries are. You know what they do have inside there, and I think you might have blown it, is a transistor, they are little tiny things, I don't know what they do, but the are soldered in the line, and they can be bought at radio shack type places. If you can get that case apart, most are glued, see if the transistor is there, it will be no good, just match it up, solder in a new one, you might be working again. Not sure about this, but worth a try. Hope this helps.

http://broncosis.blogspot.com/2010/01/my-intro-well-to-start-of-i-guess-i.html

Thats means that the cell within the battery has been damaged and the whole battery must be replaced. (there is a cardboard type divider that divides the positive and negative materials. this divider will often decompose when the battery is left on the charger for an extended duration (days or weeks) or just when the battery has been charged over its expected limitatio of a few hundred charges.

Contact Home Depot or Lowes in your area, they should be able to set you up or at least put you in contact with a supplier for that.

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!