Question about Dewalt 7.2-18.0 Volt One Hour Charger

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Change 120v chager to run on 240v

What components do i have to change on a 120v charger to run on 240v

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Re: change 120v chager to run on 240v

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

Posted on May 28, 2008

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Re: change 120v chager to run on 240v

So you could use a transformer (LINK)

or you could get a local power supply pack.

Read the label on back of power pack that attach's to wall socket and charger base, see what input it can handle, some gear can handle like 110v-230v, others cant ie will read 120v

Any adaptor that puts out the same output as the original would work ie 18v DC 2.5 amps is your specs i beleive so use a transformer or another suitable adaptor

Please check my quoted specs are the same as listed on power pack of your charge ie I am assuming you are using your 110v A.C. to 18v 2.5amp D.C power pack

Posted on Jan 30, 2008

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Which step down transformer should I get in order to use the USA dyson dc39 in Aus? Do I need to just get the step down from 240v to 120v or need the isolated 1500w step down?

To use an American Dyson in Australia you need a step up to 240v from the American 120v. Better to but a European machine that is the right voltage already.

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I have just purchesed some new milwaukee cordless power tools and have pluged it into 240v when it should have been 120v .Now it wont work any idear;s

Sorry to say that you probably have fried the charger and maybe any battery that you plugged into it.

While you might get lucky and be able to repair the charger yourself, they are considered sealed units that aren't intended to be opened up for repair. My advice would be to replace the charger instead of trying to fix it. But if you do open it up, what components you find inside (transformer, caps, etc) will probably be easily identifiable by the blackened leads.

My ex-wife who was Russian, plugged my mothers vacuum into a 220v heater outlet and although I did manage to repair it, I would have been money and time ahead to replace it instead of spending the time and money to repair it myself.

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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

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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.


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

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I have the Makita DC18ra s charger for 110V. by mistake i insert it to 220and burn the fuse and a components as described on the borad VDR1 01 Do someone knew what is this components thank alon

yes you can fix it i have done 2 charges but white you are in there if you chance the large round capacitor to a 450v one you then can use the charger in 220 v you will have to increase the size of the voltage resistant diode to 240v (the vrd101 part in the charger) or by pass it with a straight bridge then the charger should work in 220v because the rest of the charger is exactly the same the parts will be around $10 ibought the parts from farnell

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I am from Israel and our main supply here is 240volt . I bought a BOSCH 36volt drill kit from USA and I am interested to make changes in the charger in order to fit our supply .

look for a travel converter or 240v to 110/120v converter usually the adapter will plug into ur outlet and the charger[or whatever] plugs into the adapter and can convert the power down to the lower i have used mine every time i go to europe the adapters cost between 10 and 15 dollars mine is a one piece multi-use 8 different outlet designs- its easier than rewiring the charger

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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

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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

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Changing Dewalt charger from 120V to 240V

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.

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

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