How can i fix my makita 18v battery - Makita 2 Bl1830 18v Battery,dc18ra Charger Lxt Fr Drill

The Makita 18V LXT Lithium - Ion Cordless Impact Driver Kit Model BTD140 us the BL1830 battery, there are several types for it, 1.5Ah, 3.0Ah, 4.0 Ah. Maybe 5.0Ah battery for it will be available. And, the inside of the BL1830 uses the 18650 battery cell. If you have a good knowledge and skill about electronic, you can buy some 18650 cell to do it yourself. If not, I suggest you to buy a brand new one.

You can buy some original battery for replacement battery for Makita BTD140 Battery

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Some of the Makita 18v LXT tools require the BL1830 3.0AH battery and are designed that the 1.5AH battery will not fit.

Replacement MAKITA 6391D battery pack 100% compatible with the original 6391D battery, high quality, wholesale price.

http://www.drillbattery.com.au/buybattery.php/makita_6391D_power+tool+battery.html

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

Hello successfulpl, those batteries can not be repaired, but, they can be, and should be recycled.

This isn't true because I have a second charger and it works fine

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.

looks to me like a defective batterie