Sounds like Makita really gave us a good screwing. I was giving the drill as a Christmas preset six months ago. The drill has been used only a few times and the battery stopped charging. I put in the other one which had never been used an it too will not take a charge. I went to home depot and paid $100 for a new battery. It too has stopped taking charge. I was able to return this for a replacement, but damn.
Try charging the battery with a car charger set on low (2 amps max) or a wall transformer from a phone or some such with a 12v output.
(make sure it is 12vdc not 12vac)
You will need to know which of the charger wires is pos and neg, be careful not to short the battery as this will blow the fusible link. Connect + to + using jumper clips or stiff wire jammed into the battery contacts.
Once you get the battery over 10-12 volts the charger will normally accept the battery.
You can jump one good battery to the bad to do this, but in all cases watch out that the wires do not get hot, as this is a BAD sign, often a minute or two will be enough.
Of course you may have a dodgy charger, they are not robust at all.
The fans also ****, noisy and sometimes they quit, causing the charger to quit too
Matt
Giantglobes.com
For other battery issues see below
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
I have had 3 battiers of the new 18v LXT go out on me. And then I had one of my drills burn up that was one of the new 18v LXT. I am stuck with the grinder, skill saw, 2 impact drivers, sawzal, flash light, and a drill. I only have one battery left and 2 chargers. That is funny. I will never buy any more Makita tools in my life.
i am on my 7th replacement battery. the warrenty store keeps giving me new ones for now, but it gets harder every time. they are not able to give me a reason why these batteries are dieing after 65 charges. they even had my charger in to exam it. I think makita should be able to build a battery to go past 65 charges for the cost of them.
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It sounds like the problem is the charger not the batteries. Try a different charger.
Hope this helps.
The battery works on my Makita saw but the drill won't work. What should I check?
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My batteries wont take a charge all the time i just take them out of the charger a couple times and it seems to work,ive been doing this for about six months now and the batteries still work great when there charged
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There is a chip which measures battery performance on a circuit board in the battery. If one cell goes bad and the voltage drops, it will not allow the battery to charge. There is nothing wrong with the charger, its the battery itself.
is it the battery of the charger?
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