Yes, just check that It's operating voltage range is 270+ volt. And prefer if it's lower voltage range is as high as 100.

An interesting internal design detail for you.

If you purchase a 70-270 volt charger, it will operate at 70 volt and make 16 volt AC at HF Transformer, so that after rectification and regulation, it will generate 12 volt by using opto-coupler based duty cycle control. So, at 270 volt, HF transformers generate =16x270/70 volt = 61.71 volt peak. But most adapters use 40 volt/36 volt high speed diode I have seen like MOSPEC 40C25, 1N5408. Only samsung based adapter found with 100V HF Diode. But LG, HP & Others are defective in design (Commonly available laptop charges available in market).

I recommend if you get Samsung brand charger purchase it though it cost's a little bit higher and 3A is sufficient. Internally it uses much higher voltage safety factor for low voltage side high speed diode rectifier that makes it mostly undestructive throughout it's operating range as it is that culprit mostly fails.

An simple low cost solution

Just purchase a 24-0-24 volt step down transformer (300mA is sufficient). Make it as auto-transformer in series addition. Apply supply voltage n higher side and take output from lower voltage side. You can useany adapter and then that wont damage for overvoltage. It's a poor mans stabilizer (Actually optimized for use).

Wow, that's some good info Kalyan sir! I'll get a  samsung (70-270) 3A adaptor ASAP!

The PC SMPS mods look simple. But getting a 10ohm 10Watt resistor is gonna be difficult.

Quote from: KALYANPRODHAN on June 28, 2011, 07:50:01 AM
...
An simple low cost solution

Just purchase a 24-0-24 volt step down transformer (300mA is sufficient). Make it as auto-transformer in series addition. Apply supply voltage n higher side and take output from lower voltage side. You can useany adapter and then that wont damage for overvoltage. It's a poor mans stabilizer (Actually optimized for use).

Kalyan sir, I just noticed the edit and couldn't fully understand it. Could you please elaborate it a bit?
I do have a spare 24-0-24 SD Xmer and could try your idea. How to 'make it as auto-transformer in series addition'?

Let your high voltage terminal have marked with 1 and 2 and Low voltage terminal is with 3 and 4 (Neglect center tap).
24-0-24 means a 48 volt coil with center tap.
The basic trick is that you increase the turn by adding two coil and so, volt/turn reduces and kept under control.

Now, let connect 2 and 3 (One primary and one secondary.).
Put Low voltage AC in Low voltage coil(between 3 & 4) or HV AC in HV Coil (between 1 & 2).
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Case1:

Measure voltage of 1-2 and 1-4.
If V 1-4 > V 1-2,
===================> Your connection is right. (Voltage adding)
So, a continuous coil with tap -230 0 24 48
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Case 2
Measure voltage of 1-2 and 1-4.
If V 1-4 < V 1-2,
===================> Your connection is wrong. (Voltage subtracting).
Disconnect 2&3 and connect 2 & 4.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Now you get an transformer which can make 230+48 volt to 230 volt or vice versa.
Insted of using 48 volt, you may use 24 volt only (A single part)

Give input supply to
1 & 4 (for Case-1) or 1 & 3 (for case 2)
and get output from
1 & 2.

As 1 is common, connect Neutral to 1.
You get reduced voltage by

Vout = 230 x Vin / (230+48)

And you can safely apply input voltage upto 230+48 volt = 278 volt.
Or you may say your voltage will be 230 or less for input voltage 278 or less.

Read http://en.wikipedia.org/wiki/Autotransformer for more information.

Got it! Thanks Kalyan sir!

Finally I tapped a 12 V line from my CPU SMPS and attached a connector for the balancer-charger. And it works! (And in the end my wallet is as happy as me!    )
Gonna add a 'charge complete' alarm soon.
Now I can listen to songs while my PC charges LiPos and downloads RC videos at the same time! 

Quote from: Swapnil on July 02, 2011, 09:53:59 AM
Now I can listen to songs while my PC charges LiPos and downloads RC videos at the same time!  

Cool!
My adapter is again giving the same problem. Gotta replace it again. Thank god this one is just a substitute and my proper adapter is still working. But is in college.

Quote from: KALYANPRODHAN on June 28, 2011, 07:50:01 AM
So, at 270 volt, HF transformers generate =16x270/70 volt = 61.71 volt peak. But most adapters use 40 volt/36 volt high speed diode I have seen like MOSPEC 40C25, 1N5408. Only samsung based adapter found with 100V HF Diode. But LG, HP & Others are defective in design (Commonly available laptop charges available in market).

I can't buy to your above investigation and also your advice not using  Charger on SMPS at mid night:

1. I have been using Dell/HP laptop for the past 6+ years, and usually work(not official) during night , 11PM till 3-4AM in the morning. This I have done almost every 365 day of the past 6 years. I have not lost any of my Adapter/Laptop

2. My Office always has constant 220+ volt. Adding to it, I hardly have any voltage fluctuation at my apartment which has dedicated 3-phase 11KV-220v transformers.

3. Leave apart Laptops, ALL TV/DVD Player/Set Top boxes of today use SMPS (My EC TV of Circa 1980's had Transformer). I would be surprised to know late night  TV watchers suddenly found thier TV bursting up at midnight!!

Your technical drill down into Duty cycle, Transient voltage of Diode etc are fine, but claiming the power electronics engineers at esteemed companies like LG, HP & others ignored such an important design aspect of crucial module like SMPS is unbelievable. Do you have any idea how much  Design-Protoype-Testing effort these company spends on product they launch, and kind of qualified Professional (and not Paper Chemists) they hire?

So my adaptors blasted because of overload after all?

I have found a much easier solution which bodes well for me. I use a 12V battery to power my charger.
When it dies i get it recharged.

I used to do that too. But charging a battery with a battery seemed weird...so I switched back to SMPS!

Its only for 9days so I dont mind it.
After 9 days i'll be back in college with my good trusted adapter. Until lady luck smiles.