Laptop DC Charger

[RogerD]

I have an Asus laptop and they don't offer a DC charger.

Converting DC to AC to just convert AC back to DC seems inefficient and I really want to keep all AC items to a minimum. So I want to get a DC charger.

I've seen DC chargers that you can change the voltage / connectors, but they say nothing about amps.

I contacted power4laptops and they recommended a charger with the following specs.

Output Voltage: 19.5V
Output Amperage: 3.33A

My charger specs are

Output Voltage: 19V
Output Amperage: 3.42A

I asked them about the specs not being exactly the same and they said

Voltage can be plus or minus up to 1 volt either way.

Amperage can be up to 0.2a less and can be anything higher.

They also have a charger that is the exact same specs, but the connector is the wrong size. I could purchase it and just change the connector.

Thoughts?

 

[highdesertranger]

go to Amazon and type in your make, model of your computer and add car charger. see what comes up. highdesertranger

 

[RogerD]

go to Amazon and type in your make, model of your computer and add car charger.  see what comes up.  highdesertranger

I've done that and it only returns AC chargers and DC chargers that aren't correct.

That's one of the first things that I did.

 

[QinReno]

....
Converting DC to AC to just convert AC back to DC seems inefficient and I really want to keep all AC items to a minimum. So I want to get a DC charger.

Would be nice to have some hard evidence in regards the efficiency of modern pure-sinewave and other inverters, however I don't think that is a truly major issue. I should imagine at least 80-90% (but what do I know).

My laptop draws about 40W, whereas the power supplies you cited are more like 60W. You can get a 300W pure sinewave inverter for $50-80 or so on amazon, and it'll work right off. Easy solution and don't worry about efficiency. I usually just try the most straight-forward approach and let it go at that.

 

[WanderingCanuck]

Instead of using the make/model of your laptop, use keywords "19.5V" and "12V". There isn't much other than DC/DC converters that comes up with this combination.

Here are two of the first hits from Alibaba, though I'm not advocating these in particular. I'm just linking as an example of what to look for.

https://www.alibaba.com/product-det...a2700.7724857.normalList.1.e0352120CVvfDn&s=p

https://www.alibaba.com/product-det...2700.7724857.normalList.13.e0352120CVvfDn&s=p

There was another thread about this recently where I learned of this option. You may want to read:

https://vanlivingforum.com/showthread.php?tid=33239

 

[WanderingCanuck]

One like this was also mentioned at some point:

https://www.alibaba.com/product-det...m=a2700.7724857.normalList.109.e0352120CVvfDn

 

[B and C]

If you gave us the model of your ASUS laptop, maybe we could be of more help. You just provided voltages so we don't even know what tip you need.

I had to make my own 12V DC adapter for my 24 inch smart tv. It came with an external power brick so it was an easy chop it off and splice on the correct 12V DC power brick. None available with correct TV power connector. I used one for an HP laptop, 19.5V DC and it worked a champ.

 

[RogerD]

Asus Q524U

Power Adapter
model: PA-1650-48
4.5mm x 3mm plug
19 V DC
3.42 amps
65 W
Input: 100 -240 V AC, 50/60 Hz universal

Power4laptops created this listing for me.

https://www.power4laptops.com/p/asu...from_store=power4laptops_english#.W7S27WhKiyJ

 

[John61CT]

No need to match **either** volts or amps exactly, thinking way too much.

But some Apple, HP, Dell and Lenovo models actually require their own proprietary chargers, special handshake or it won't work.

More amps the better, some gamer rigs eat well over 100W at high res.

Long as you think enough amps

best is to measure with a Killawatt or WattsUp

then close-enough on volts

pin size and

polarity is all you need to worry about.

99.9% of the time a cheap Universal kit works just fine.

 

[B and C]

Here is what I came up with after a quick google search:
http://lps-gopower.com/lps-ac-adapt...l0Tv8JFGjSm68Fc_4pOi8CFIfu_jTTYoaAsmYEALw_wcB

From the ASUS site:
https://www.asus-accessories.com/ai...arger-multi-tips-boxed-version-59879-1701.htm

 

[MotorVation]

"I had to make my own 12V DC adapter for my 24 inch smart tv.  It came with an external power brick so it was an easy chop it off and splice on the correct 12V DC power brick."

I'm not trying to hijack the thread but.....
Hey Brian, can you tell me the exact model number of your smart TV? I've been trying to find one for over a year that will work on 12 volt. I know there are plenty of regular 12 volt TV's but I'm looking for one with "smart" capabilities. Thank you! 

 

[B and C]

MotorVation Wrote:

I'm not trying to hijack the thread but.....
Hey Brian, can you tell me the exact model number of your smart TV? I've been trying to find one for over a year that will work on 12 volt. I know there are plenty of regular 12 volt TV's but I'm looking for one with "smart" capabilities. Thank you!

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It is an LG 24LJ4840 in white.
The one big flaw (for me anyway) is when watching one of my movies stored on an external HDD, it won't auto-advance to the next *.VOB file.

Sorry for the hijack. Maybe a new thread with the question "What 12V DC Smart TV did you install and why" should be started.

 

[highdesertranger]

I deleted a couple of posts. please you MUST include a description with your links, also you can't post links until you have 10 contributing post. highdesertranger