Question about Dewalt 7.2-18.0 Volt One Hour Charger

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Changing Dewalt charger from 120V to 240V

Hi,

I also want to covert my charger from from 120 VAC to 240 VAC, did you get any useful responses???


Cheers,
Richard.

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All i can say get a seperate step up transformer fron 110v to 220v.then just plug in charger to the step up transformer. make sure that u have 2 consider the frequency in ur country.

Posted on Aug 21, 2008

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Is the Dewalt DE9108 battery charger suitable for charging Ni-Mh batteries?


  • For Battery Type: Ni-Cd Ni-MH
  • Input Voltage: 110V-240V
  • Smart Charger for Dewalt 7.2V ~ 18V Ni-Cd Ni-Mh Li-ion Battery
  • For Brand: DEWALT
  • Color: Black
  • Brand New: A brand-new, unused, unopened, undamaged item in its original packaging

May 04, 2015 | Dewalt Drills

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I want to change 120v charger to run on 240v.What components have to be changed?


Can't be done.
Even if there was a safe way to put power to the neutral wire, the fact is you would still be running more than twice the power through it, and it would blow up. It would get much hotter.
Nor would the charger put out 7.2 to 18 volts any more.
It would put out over twice that.
The only way it could be done is if the unit was intended to also be run on 240 volts, and had a European selection setting switch.

Mar 12, 2011 | Dewalt 7.2-18.0 Volt One Hour Charger

1 Answer

Hi. I have a charger for 18v Dewalt Li-Ion (dc9130 120v 60hz) and I'd like to find a circuit diagram so I might be able to convert it to use with 240v 50hz. So I probably need the diagram for the 240v one...


most chargers will fuction on 240/50 hz, look closely at the writing on the charger, it may say. I have laptop chargers and have used the overseas with no problem, that being said, you might try contacting dewalt and asking them if you can do it. Like I said, it probably already will work without doing anything. i have seen some devices (amplifiers mostly) that have a switch on the bakc to switch voltage, ( I don't recall ever seeing a switch to change line frequecny though), hope this helps a bit

Mar 10, 2011 | Dewalt Drills

1 Answer

Can you put a aussie 240 volt plug on an US battery charger


Look at the specs on the label, if it says that the charger is capable of taking a 240v input then you can change the plug and use it at 240v with no problem. If it says 120v then you won't be able to, you'll want to use a transformer or some other 240 to 120v supply.

lp

Dec 26, 2010 | Dewalt 7.2-18.0 Volt One Hour Charger

1 Answer

Will DeWalt charger work on 120V 50Hz?


I don't think that would be a problem, For schematics I would go to Dewaltservicenet.com and type in your model number usually in the center of the site and download a breakdown. Let me know if i can help more.

Feb 13, 2009 | Dewalt 2 Position Screw Driver Kit...

1 Answer

I require a step down plug


I'm disappointed that Dewalt does not have the full specs on their website so . . .
Check the specifications on the charger's label; they should read something like 120 VAC or Volts AC and 2.0 (or similar) amperes or just 'A' after a numerical value.
If the label does not give you an amperage value you can use the output value instead and substitute the output voltage at the high end if a range is listed.
To get the adaptor (step-down transformer) wattage, multiply the AC values such as:
120 X 2=240 watts input power.
If these AC values are not available;
Take the high end charge voltage if it is a multirange charger, and multiply those values;
One we own DW9108 (- yours is 7.2 - 18) is spec'd at 9.6 to 18 volts and 2.8 amperes:
2.8 X 18=50.4 watts.
You can see that the values do not correspond but it is a multirange device so the maximum current taken from the AC line can be ~ 2.0 amperes but this is charging a specific pack and the peak input current is only momentary so the maximum output current and voltage are the values one should use as a guide. In other words, the output wattage is closer to the value needed.
Since there are losses in any transformation (mostly heat), the required stepdown transformer must be capable of more than the indicated 50 watts.
A safe factor would be 1.5 X 50 (W) or ~ 75 watts minimum to ensure the charger receives the 120 volts it wants.      
Anything that will step down your (?) 220 volts and is rated at 75 watts or more will do the job even if the Dewalt draws a little more current at your line frequency of 50Hz which it may.

Oct 09, 2008 | Dewalt 7.2-18.0 Volt One Hour Charger

1 Answer

Dewalt charger


Ok, for easy way, you can just put a 1~2A diode in series of the input 240v power wire, so the after voltage would be around 120v, but for precaution it is better that you put two diode in series, it will give you same result. In addition, I have already tested it on a similar charger, it works fine.
p.s: I do have a similar one that is also 110v, I compared it with other 240v one. They worked same.

Jul 03, 2008 | Dewalt 7.2-18.0 Volt One Hour Charger

3 Answers

Drawing


OK, sorry, because my internet connection went down for near a month, so ...
No problem for that, just give me your e-mail address.I will e-mail you ASAP.

Jul 03, 2008 | Dewalt 7.2-18.0 Volt One Hour Charger

1 Answer

Circate diagram


Hi,I just find the circuit diagram,hopefully that could help you ! :-)633a624.gif

Nov 21, 2007 | Dewalt 7.2-18.0 Volt One Hour Charger

2 Answers

Change 120v chager to run on 240v


all you needs is a step tranformer from 110v to 220v ac

Nov 13, 2007 | Dewalt 7.2-18.0 Volt One Hour Charger

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