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The lay out of the parts used in the circuit diagram of a -Yardworks- drill 18 volt dc battery charger.

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Hello. Yardworks is a lowend manufacturer based in China. They do not publish their wiring diagrams. I recommend that you send your charger to the recycling bin and replace this drill. J.

Posted on Jun 05, 2010

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Posted on Jan 02, 2017

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I need to know what the output needs to be on the charger of an 18 volt jobmate cordless drill.


During the initial state of the charge, the charger operates in a fixed-current mode. This means that the current will be held at a constant rate until the battery is charged to a bit over 18 Volts. During this phase, the output of the charger will not be 18 Volts. This is done for safety and battery preservation; forcing 18 Volts on a battery discharged down to 15 Volts or less could cause the battery to overheat. If no battery is connected, the charge controller may hold the output low until a battery insertion is detected.

The exact behavior of the charger depends on the chemistry for which it is designed, whether Nickel-Cadmium, Nickel-Metal Hydride, or Lithium ion. If the output of a known-good battery is 18 Volts after charging, and it has normal capacity, the charger is working properly.

However, a bad cell in the battery changes things. If you run a Ni-Cd battery down too far, the weakest cell in the battery may begin to reverse charge from the current coming from the other cells. This usually causes an internal short circuit, and the cell will be stuck at 0 Volts. A battery pack with one shorted cell will read 16.7 -16.9 Volts when fully charged, and the drill will not have the peak power it should. The charger will give you a battery fault indication if it is equipped to do so.

Jul 08, 2017 | Drills

1 Answer

Can you use an 18 volt dc drill on a pier


No, you will damage the drill.
Here's a fellow that tried it:
https://www.youtube.com/watch?v=tfC-fKlPN7g

You can now buy waterproof drills although the price is something else: https://nemopowertools.com/

- I've just re-read that and if you mean that the drill will NOT be in the water then yes, that's fine.

Jun 24, 2016 | Dewalt DW056 18 Volt Cordless Impact...

1 Answer

My charger is not putting out dc voltage, but is putting out ac voltage. for example, if i select 24 volts it will put out 24 volts ac, not dc. what failed to cause this problem? I am getting no amps on...


Hi, you're Rectofier has failed if you have A/C voltage and no D/C voltage. This is what converts A/C volts to D/C volts. If you have a diagram or any parts manual, you can locate this part and replace it. You will need to go to a place that repairs these chargers, or where you bought it to order or but a new one.
Sincerely,
Shastalaker7

Dec 30, 2010 | Heavy Duty Associated Equipment 6002B...

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I bougth reciprocating saw, model BJR 182Z and circle saw, BSS611Z while I was in the U.S.A.These tools use the 18 volt LXT Lithium-Ion battery BL 1830. I also bought this battery.However I am going to use...


Why can't you buy the 230 volt DC18RA charger in europe (amazon.europe country) and use it. I had the same issue yet i burned out the fuse in the 110 volt DC18RA charger because i plugged it into the wall just using an adaptor. Lesson learned. Therefore, my first solution was that i bought a converter from 220V-to 110 Volt. This showed me that my charger was done. So instead of getting another 110 volt charger sent here to Europe from Canada, I returned the converter and have on order a 230 volt input DC18RA charger from amazon.de which has the same 7.2-18V output. I have been told this will work yet the fear, and I don't know why, is that it will burn out the batteries in a year or so. It is difficult getting specific information from Makita, but I hope it all works out. Best of Luck for you

Dec 16, 2010 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

1 Answer

Hello all you electronic nerds. I have a simple question so please do not try to give me a college education in your answer. I have an 16.8 drill battery without a charger. i need to find out if it will...


No. Not unless you also use the right size diode to make the AC go in one direction only.
AND---- Don't try anything like this with a Lithium battery! We're talking NiCad, right?

May 06, 2010 | Ryobi Multi-Volt Battery Charger

1 Answer

Charger died.


It is usually a current limiting resistor anyway... so I would think that about 100 Ohms should be all good, you generally need about 250 - 300mA to charge ya batteries. It is simple Ohms law calculation.

Feb 04, 2010 | Drills

1 Answer

I have burnt out one of the resistors in my 18 volt 3 pin battery charger. Is the circuit diagram available so that I can identify and get a replacement resistor ?


MOST OF THE TIME MANUFACTURERS DOESNT SELLE DIAGRAMS,BECOZ THE WANT ONLY TO REPAIR THEIR PRODUCT BY THEIR CERTIFIED TECHNICIANS.

Oct 22, 2009 | Black & Decker 18V Hammer/Driver Kit

2 Answers

WHERE CAN I GET A REPLACEMENT CHARGER FOR A GREATNECK DRILL?


I have to be the bearer of bad news. These are mass produced to give you the lowest price possible. They are made in Keorea/Taiwan and unfortunately do not make replacement parts. These are sold to any company that pays enough to put their name on it. Shop force makes the same drill and several other brands. So when something goes bad you have to replace the entire drill (only comes in the combo pk). You can't buy seperate pieces. Try shop force or Master craft. They're similar to what you have. Found one on Ebay. IF you keep looking you can probably find a seller with just the charger. Good luck
http://cgi.ebay.com/18V-Cordless-Drill-with-charger-battery-NEW_W0QQitemZ260460074195QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ca4a154d3&_trksid=p3286.c0.m14

Jul 31, 2009 | Great Neck 80125/79681 Cordless 18V Drill

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