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Makita charger circuit board diagram - Makita Drills

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SOURCE: Makita 1850 battery charger FIX.

I have a BL1830 Lithium Ion LXT battery that will not charge because the charger tells me the battery is broken. I have taken the battery apart to find no problems with the connection from cell to cell. There is a small circuit board that I cant find any visible signs of damage on. The battery will still run a flashlight or a drill but it is almost drained.

Posted on Aug 11, 2010

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Rebuilding makita battery instructions


Rechargeable batteries are almost never worth rebuilding and never last very long when they are. In some cases, Makita being one, if the circuit board in the battery detects something wrong with the battery, it 'bricks' the battery. This is not resettable and the battery will not charge on a Makita charger. I'd be looking to get my money back from the repairman since his rebuild didn't take.

Jan 16, 2013 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

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Makita 1850 battery charger FIX. A friend asked me to check his charger unit which had failed after it had been connected to a portable petrol generator that incorrectly generated 317 Volts AC and not the...


I have a BL1830 Lithium Ion LXT battery that will not charge because the charger tells me the battery is broken. I have taken the battery apart to find no problems with the connection from cell to cell. There is a small circuit board that I cant find any visible signs of damage on. The battery will still run a flashlight or a drill but it is almost drained.

May 16, 2010 | Makita Drills

2 Answers

Charger not powering up, fuse is good?? what the f---?


Internal board fuse checked? This may/may not help?

Makita 1850 battery charger FIX. A friend asked me to check his charger unit which had failed after it had been connected to a portable petrol generator that incorrectly generated 317 Volts AC and not the usual 240 Volt AC. On the charger circuit board next to the transformer wire connection is a component marked F2; this is a 2.5Amp fuse covered with heat-shrink sleeving. This fuse had ruptured/blown. Also blown was Transistor Q1, a ''P'' Mosfet labelled IRF9Z24N and Schottky Diode D9 labelled SR560. Replacing these 3 items got the charger working again. NB Resistor R31 is only 0.1ohm - don't assume it's gone short circuit! NB. I'd presume that most other Makita chargers will have this heat-shrink sleeving ''camoflaged'' fuse on the input of the circuit board and it would definitely be worth checking if the charger has stopped working. Regards Roy

Oct 24, 2009 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

1 Answer

Makita DC1414 schematic


From my experience most chargers do not have replacement parts. And when you do find a schematic for a battery charger it consists of just the cord and housing, and the printed circuit board is not available. This is the case with this model DC1414. The cord and housing are the only things available for replacement. You can purchase a new charger for around $37. If you have any questions please post back.

Oct 11, 2009 | Drills

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Was given a Coleman power drill, model CMD8189. The charger is inoperable. The two resisters on the charger internal circuit board have been fried. The resistor codes have been burnt off, so I cannot


I need the same, but found a Makita multi-voltage charger and have been able to use it. The package says It is for Makita batteries only. HItachi also makes a universal battery charger. I found both at my local Lowe's. The Makita was originally $69, but was marked down to $25. The Hitachi was around $70. You can find either one for good prices on Ebay or Amazon.

Good luck!

May 05, 2009 | Coleman Cable Coleman 18 Volt Combo Drill...

2 Answers

Charger no light and wont charge


Sorry to give you my opinion, but these chargers are very delicate, I have 4 and can barely keep 2 going. My recommendation? Open it up and look for obvious shorts/loose wires, if no luck then buy another one and return the busted one as if it were the new one. You will end up with two working chargers. PS this is probably fraud...ha!
Matt Giantglobes.com

Mar 10, 2009 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

2 Answers

MAKITA DC1290A CHARGER PROBLEM


Makita generally does not provide a schematic for the charger wiring. The only parts that are usually replaceable are the cord and housings and possibly a fuse. If this is an older charger I would look for a "cold solder joint" I fixed quite a few for this and one component breaking loose. I dont know if Makitausa website can help or not. What volt is this charger, I have a couple in my garage that I can look at also

Jan 19, 2009 | Makita 12 Volt Cordless Drill/Driver Kit

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