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Old 15th March 2007, 10:51   #16
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As many have said, it makes little sense to do what you're planning. consider the two alternatives

1. 12V DC from Car battery --->[Inverter]---> 220V AC --->[laptop pwer adapter] ---> 12V DC again.

2. 12V DC ----> laptop

Method 2 seems more direct, efficient and reliable right? Why dont you look for a laptop car adapter accessory?
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Old 15th March 2007, 10:54   #17
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What is your exact purpose ..If the purpose is charging the laptop then Its better to get a 12V Laptop charger.
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Old 15th March 2007, 11:02   #18
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Quote:
Originally Posted by ajitkommini View Post
As many have said, it makes little sense to do what you're planning. consider the two alternatives

1. 12V DC from Car battery --->[Inverter]---> 220V AC --->[laptop pwer adapter] ---> 12V DC again.

2. 12V DC ----> laptop

Method 2 seems more direct, efficient and reliable right? Why dont you look for a laptop car adapter accessory?
Laptops use 40/35V DC.
So you still need a DC-DC converter, and that is more efficient.
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Old 15th March 2007, 12:05   #19
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Quote:
Originally Posted by tsk1979 View Post
Laptops use 40/35V DC.
are nahi bahi...what I have seen is from 15 volts to 21 volts max.......with different companies but the 19 volt is the most common....
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Old 15th March 2007, 12:19   #20
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yup, my mistake, its 19V actually.
Dell uses 19V.
You will need a DC-DC converter for a laptop.
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Old 15th March 2007, 12:42   #21
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When I purchased a Garmin GPS device for self - iQue3200, it never came with a car adaptor. Its battery used to last for hardly 5-6 hrs. The GPS dealer then sold me an invertor - 12v to 220v AC ~ 150W for Rs.2500. That was 1.5 years ago. It is working fine and runs my laptop, DVD player, charges my GPS device etc.

Have not encountered any problem whatsoever.

Quote:
Originally Posted by low_bass_makker View Post
are nahi bahi...what I have seen is from 15 volts to 21 volts max.......with different companies but the 19 volt is the most common....
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Old 17th August 2007, 10:15   #22
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Default Is it possible...

to make a laptop draw power from the car battery?
Not sure why any one wud do that...but still then.
If so how?
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Old 17th August 2007, 15:36   #23
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There are car-chargers available for Laptops. Unbranded car chargers are dangerous for the Laptops.
So, I would suggest getting good brands.
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Old 17th August 2007, 16:21   #24
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Go to - Inverters - Inverters under 1000 Watts

Quote:
Originally Posted by amohit View Post
to make a laptop draw power from the car battery?
Not sure why any one wud do that...but still then.
If so how?
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Old 17th August 2007, 19:59   #25
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Quote:
Originally Posted by naveendhyani View Post
hi all!

is there a device which plugs in the cigerette lighter adapter & can b used 2 charge ny 220 v device?

i mean something like a power strip which takes in 12 V, amplifies it to 220 V & has normal extension cords on the other end. sometimes need to charge the laptop & other electronic devices while on travel.
there are lots of them... but dont go for a cheap ones from ebay..get a branded one with a decent fuse..
also make sure it has an in-built fan/cooling system, coz they will get pretty hot lying on the floor of the car..
go for brands like Cobra -they got a decent reputation with radar detectors and other car gadgets , pretty good.
I've been using one for past 2 years..
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Old 17th August 2007, 20:30   #26
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I recently brought one for about Rs 1.2 K from Hyundai A.S.S , comes with 6 month warranty and yes it has both a fuse and a Fan for cooling itself has been using it with my laptop and also my mobile and handycam charger. I have the 150 W version, but had i know about the existence of the 300W version i would have jumped at it :-).

But then again you have to check the fuse rating of he Car Ciggy Plug before you start attaching things on to it , or it might just blow you fuse .

you can find details of the product at AC DC Adapters Manufacturer,Switching Adapter Manufacturers,AC DC Adapters India,AC DC Switching Adapter,India
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Old 19th August 2007, 00:40   #27
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hi... I got belkin a 1000 watts... using it since last 2 years.

no problems at all and it "is" very handy.
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Old 19th August 2007, 09:40   #28
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Quote:
Originally Posted by yuv View Post
hi... I got belkin a 1000 watts... using it since last 2 years.

no problems at all and it "is" very handy.
@yuv, did you buy it from India or abroad? If from abroad, did you buy online? Could you say how much you bought it for? I was also looking to get a good quality power inverter.

The ones in hellstar's links also look to be way better than the typical ebay-type ones.

Last edited by hydrashok : 19th August 2007 at 09:42.
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Old 20th August 2007, 09:17   #29
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I have used and blown 9 inverters so far, all different brands and made in china and inda, all of them rated over 150W and with cooling fans....

Now i use an APC inverter secifically made for laptops. This has been the most reliablle and robust system so far for me. Retails for around 2.9k.
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Old 20th August 2007, 10:23   #30
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I use inverters (250 W) in my car that can be used to charge laptops, handycams and mobiles. For my Garmin GPS, I have a special adaptor supplied by Gramin (as an accessory). I bought the inverters in Bangkok, teh first one is over 2 years old, once there was burnout (thanks to an overload, my fault, tried to run a car vacuum cleaner off it!), but taht was locally repaired. I have tried finding teh inverters in India (Bombay, Lamingyon Road) but did not succeed. The inverter costs me less than Rs 1,500 equivalent in Bangkok.

After the adapter, I have no problems with charging any devices on the move. Particularly useful when I go on my long driving holidays.
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