Netbook Charger To Charge Laptop?

Hi all,

Ok, so I have three Samsung computers, one laptop (R480) and two netbooks (N120 & N310).

I know that if I use my laptop's charger to charge my netbook, it would be a very bad idea. But what about the opposite, netbook's charger to charge laptop. I know it will charging slower, but does it do any harm with the laptop if I use the netbook charger?

(I am trying to use less cables)

Laptop Charger
Input: AC 100-240V, 50/60Hz 1.5A
Output: 19v, 3.16A
Power: 60 Watts

Both Netbook Chargers
Input: AC 100-240V, 50/60Hz 1A
Output: 19v, 2.1A
Power: 40 Watts

Thanks guys.

 

you are mistaken you can take your laptop charger to charge your netbooks but not netbook's charger to laptop. As long as they supply the same volts you and the same or more Amps you are good. Now you could use your netbook charger to charge your laptop while its off but it will not be enough to support your laptop while on. Your netbook charger is 2/3 of the needed power. Now it might work under bare minimum power draw...aka lowest brightness/idle/wireless radios turned off/maybe you might even need to undervolt the system. More amps will never hurt because that is just the maximum the power supply can give out at any given time. Less will hurt. Now you could under emergencies get away with the netbook charger but it is not recommended. What happens is one of these two things:

1. power supply force shuts down/crashes because of too high of a draw. Note this has happened to my laptop with the 120W PSU because of overclocks. This is also really hard on the PSU.

2. The power supply will run and give off the 40 watts max and your laptop battery will put in the rest of the needed power.

Remember this is not recommend.


Now laptop charger to netbook will work fine because it has 19v plus 50% more amps so you will have plenty of power left over.


Side note never give more volts or less volts. It will slowly damage your equipment (or kill it right away...depending of the variance. I under emergencies will put 4 1.5v batteries together, which are alkaline. Under heavy load they drop to ~1.3v in ~5 mins so that is in the margin of error for USB 5V +-5%. This is why I can charge my phone and still use it in power outages. This is not ideal but I have done this for at least a total of 4 full days so far without hurting my phone.


EDIT: i am surprised your netbooks have a 19v charger. They usually ship with a lower voltage.....or am I thinking of the battery?

 

Have you tried this?

I am worried about frying my netbook's battery or even the netbook itself, due to high amp.

 

amps is the current of power. PSU only increases current as demand increases (overclocks/brightness/gaming). So you will not have a problem. Think of it this way. You make a battery back up and it has 19v and 900 amps max. If you only need 3 amps the batteries wont give out anymore because there is no demand. Wall outlets and PSUs work pretty much the same way. Your notebook charger probably only maxes out when everything is fully draw so normally your probably running at half the amps(depending on settings and usage...even more so for gaming laptops).


Does that explain everything?


Side note if you are still worried moral hazard +rep me for my response so I assume he agrees.


EDIT: only way it'll fry is if a surge, spike, or short happens but either way that can happen with your lower power PSU. Or you somehow overclock to hell and it frys itself but then again not because of your PSU.

 

The fixed variable on an adapter is the voltage, the current will be determined by the power draw. When a charger is rated at 19V 3.1A, it means that the charger can supply 19v with a current of up to 3.1A or 60W of power if you prefer. If your computer is only using 45W, then the adapter will supply 19V at 2.4A which is still within it's operating limit.

In short you can use a higher amperage adapter without any problems as long as the voltage remains the same give or take 0.5V.

If you take the netbook charger's to the laptop, and the laptop needs more than 40W of power, you'll be operating the adapter outside it's rated condition leading to overheating and the adapter's breaker cutting it off most likely. If the laptop is off and you only want to charge the battery, the power draw will likely be within the netbook's adapter specs, but if you charge it with the laptop on, i wouldn't count on it if you stress the system a bit.

 

Thanks tijo for your simple explanation. Now I understand completely.

 

Hi all

I have a netbook that is 19v and 2.4A max should I charge it with a charge 19V and 4.47A? It will have problem?

 

There should be no problem with using a PSU which has a higher current rating than the netbook specifies because the netbook will only take what current it needs.

John

 

My question is: If we can charge our smartphones and tablets with any 5V power adapter, whatever the current (apple says it at https://support.apple.com/en-us/HT202105), why couldn't we charge our notebooks and netbooks with any 19V power adapters, whatever the current?
I'm considering notebooks and netbooks with battery!

Thank you!