Questions tagged [ac-adapter]

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I have two powerline adapters. If I buy another two of the same brand and model they will all work?

More details: The model is TP-LINK TL-PA411KIT AV500. I have one connected to the router and one in a bedroom. Can I buy another two and add them in other bedrooms?
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19 views

Laptop turns off after connecting adapter

I have an HP ProBook 4520s. When I connect AC adapter to it, it turns off immediately and I cant turn it on again for about 20 minutes. Charging LED doesn't turn on. Adapter voltage looks normal. What ...
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18 views

Would this charger work? [duplicate]

My original laptop charger broke, so I got another one that is similar. The problem is that the 2nd one broke too. I found a different one, but don't know would it work. My laptop battery is ...
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1answer
45 views

I got this AC universal adapter for my laptop how to use it?

On the universal AC adapter there is the switch 15, 16 or 19.5 volt. I read the manual to set the switch to what it say on the back of the laptop. It say output= 19 Volt on the label back on my laptop,...
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1answer
3k views

What happens if I use lower amperage in “input”?

I have problem now. I want to ask what happened. I bought new charger for my HP compaq nc6400. My charger stats... 60W Input : 100V-240V~1.7A Output : 18,5V = 3,5 A (HP supported) I used.... 90W ...
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2k views

Kali linux doesn't show battery status

Recently I installed Kali linux on my laptop (Innjoo Leapbook M100) but it doesn't show the battery status (nor during live boot). It shows no icons of it anywhere and neither the AC adaptor. It's a ...
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2answers
121 views

How to find a compatible AC adapter for my external HDDs?

I have 2 external HDDs, from which I lost the AC adapters. One is Seagate and the other one is Toshiba. How can I find power adapters for them that are fully compatible?
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1answer
130 views

Cannot charge laptop battery

My laptop had gotten pretty old and the battery would not charge so I bought a new battery. I soon noticed that the new battery would not charge either. When I plug the cable in it charges for a few ...
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1answer
1k views

Must I reduce USB's 1A output to 450mA?

I have a bluetooth headset that charges at direct current 5 Volt and 450 Milliampere. I charge it with its original AC-DC-converter and I want to be able to charge it over USB (e.g. from a portable ...
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1k views

Are these “slide-in” interchangeable plug adapters standardized/generic?

I'm sure I have or had at least one other device with this handy feature, but here's a photo of my Lenovo netbook's wall-wart power supply with the Australian slide-in adapter plug detached. This is ...
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1answer
312 views

Will the TP Link WDS-3600 work with a 9V 0.6A AC adapter?

I just bought this router and on the back it says it consumes 12V 1.5A current and in the package I got 9V 0.6A adapter. Is it good for it and will it work on this power adapter? I bought the router ...
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1answer
85 views

Power supply rate for Riger ADSL Modem 2/2+ DB102

Does anyone know what type of power adapter for this kind of modem?
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1answer
412 views

How Do I Know Which Replacement AC-Adapter Is Right For Me?

I'm trying to find a replacement AC adapter for my MSI GS70 Stealth Pro-024. The original stopped working due to damage to the cord. As I began looking I found a number of options but became dismayed ...
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1answer
23 views

Is 2013 Toshiba AC adapter compatible with 2005 Toshiba Satellite A-70

I have a 2005 Toshiba Satellite A-70 running Windows XP that I use to run some DOS data collection apps. The LiteOn AC adapter I was using has finally packed it in. Can I use the AC adapter from my ...
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1answer
163 views

Same voltage and current rating but different brand laptop AC adapter? [duplicate]

I'm in India where AC adapter of Y510p(Original) is not available. Ac adapter of Y510p has rating of 19.5v and 6.15a, I found AC adapter having same rating of Hp, is it secure to use on lenovo laptop?...
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74 views

Safely connecting and disconnecting internal drive externally

I just bought an IDE/SATA-to-USB2 cabling system (not an enclosure) which supplies power from an external AC adapter. I intend to use it to finally image all the stray IDE hard drives I have so I can ...
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1k views

laptop not charging with battery and not starting without battery

Me and my sister have identical laptops. Whilst i was using my laptop i noticed that the laptop was indicating it was charging however the battery power level was decreasing. So it knew the adapter ...
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1answer
92 views

Power Adaptor Compatibility [duplicate]

my Sony Vaio Power Adaptor broke today and i wondering if i could replace the broken one with the Adaptor from my older Vaio, here are the specs : Broken Adaptor : VGP-AC19V54 Old Adaptor : VGP-...
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1answer
1k views

Attempt on charging laptop, spark sound happened

So I tried charging my laptop after an accident with some electricity, after a while there was a spark sound coming from the charging input. The laptop is running fine, is it a problem with the ...
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2answers
2k views

Can a 20V, 4.5A travel adapter replace a 19V, 3.42A charger on ThinkPad T440 Lenovo?

I have a ThinkPad T440 that came with the new adapter plug "slim-fit". The original charger is 19V, 3.42A. I ordered a replacement AC for travel, and Lenovo sent to me a charger that is 20V, 4.5A, ...
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1answer
75 views

Laptop adapter dies when connected to computer

I own am Acer Veriton l460 Yesterday I tried to start up my computer but it failed to start. These are the assumptions I made. The adapter inputs 240v and outputs 19v which i both checked with a ...
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1answer
686 views

How can a power supply rated 7A be strong enough for two devices rated 5A? [closed]

I am not understanding something fundamental to amperage: Consider this adapter which outputs 12V 7A. It claims that several (eight, in this case) devices running at 12V 5A can draw enough power from ...
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3answers
2k views

Laptop AC adapter stopped charging after changing the OS

I am facing a problem with my HP compaq 6710b I have a 90 watt battery adapter which was working fine(i have tested it in other laptops too) when I had Windows XP Professional installed in my Laptop. ...
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2answers
875 views

Buying a new laptop adapter: what specifications?

What specifications do I need to look after when buying a new laptop adapter? For example, on my adapter the following is written: INPUT: 100-240V ~ 2.15A 50-60 Hz OUTPUT: 19V -~-~ 6.3A
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1answer
499 views

Incompatible adapter for Lenovo laptop [duplicate]

I ordered online for a Lenovo 65W AC adapter for Lenovo G550 laptop. My original adapter had specifications: 19V 3.42A (64.98W) While the one I got has specifications: 20V 3.25A (65W) I want to ...
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2answers
487 views

Keeping a laptop power supply on without a laptop connected - any negative consequences?

Sometimes I unplug my Thinkpad laptop from its AC/DC power supply adapter and keep the adapter connected to the power socket. Are there any possible negative consequences? Some ideas I was thinking ...
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1answer
11k views

5V power adapter for 12V router?

I just bought an used Linksys E4200 router (V1). On the back of the router it says 12V 2A, but the power adapter I got (model number AD 5V/2F) says 5V 2A. So the voltage is different. I tried it ...
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2answers
96k views

is that possible to use lower amperage ac adapter for my laptop? [duplicate]

I have Toshiba satellite l505 laptop and the ac-adapter is damaged. i found new adapter but it's output is 19v 3.4a and the output for the laptop is 19v 4.7a. is that safe to use the lower voltage?
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0answers
245 views

Laptop: Replaced/Tested all power components, still won't charge

I'm a computer technician, so please avoid the obvious diagnostic suggestions - info provided. I'm working on a Compaq Presario CQ40. Originally, the battery would not charge or run off ac adapter. ...
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0answers
391 views

How to test laptop adapter voltage with a Digital Voltage Detection Screwdriver Test Pen

Couple of days ago I replaced my laptop adapter, and when I use that, some amount of current discharges through the sockets,ports...etc (i.e. audio out). So I checked the adapter with a Test Pen (I ...
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2answers
1k views

Is it safe to use an American power adapter in India and Australia? [closed]

I'm going to India and Australia on a business trip in a couple of days and plan to carry only a tablet instead of my trustworthy laptop (which got dunked in the tub by my oldest - don't ask). The ...
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2answers
13k views

laptop motherboard “shorts” when connected to adapter

Disclaimer: I'm sort of a noob, and this is a long post. Thank you all in advance! summary: completely dead laptop with no signs of life whatsoever (suddenly, for no apparent reason) Here's the deal:...
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1answer
479 views

Laptop's power supply discharges the battery 10-20 seconds after unpluging from wall

Everyday after turning off the laptop (not before) I'm unplugging the power supply only from the wall, not from both wall and laptop. But it started to discharge the battery. After unplugging the ...
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0answers
493 views

Acer Aspire Laptop won't charge in Windows 7 Home Premium x64

I have an Acer Aspire 7750-6801 laptop running Windows 7 Home Premium 64 bit OS. The issue is that it will only charge sometimes when plugged in. I thought it might be a hardware issue, so I tried ...
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1answer
71 views

AC adapter buzz

Yesterday my laptop was connected to an unsecure power source, and today I'm hearing a weird buzz coming from the AC adapter. It seems to fluctuate depending on the CPU usage :) Is it something bad? ...
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1answer
17k views

Is it safe to use a laptop AC adapter with 220V power if the AC cable is not rated for 220V?

The AC adapter supplied with my laptop is designed to accept voltage in the range of 100-240VAC at 50-60Hz, but the AC cable that plugs into the adapter unit itself is only rated to 125VAC 7.5A 2.5A. ...
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3answers
21k views

Would this AC adapter work with this external HDD enclosure?

So I've lost the adapter that came with my external HDD enclosure, but I have a pile of AC adapters, most are under-powered. This one is the closest, but it seems like the enclosure needs a little ...
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13answers
73k views

Laptop touchpad response badly when on power supply?

I have HP pavilion 2200 series laptop with AMD processor, 1GB RAM, on board nvidia display card. It suddenly cause following problem: When the adapter is unplugged, the touchpad works correctly and ...
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1answer
1k views

charging laptop with a different adapter charger [duplicate]

Possible Duplicate: charging laptop with a different manufacturer's charger I have lost this adapter, Output Voltage: 19V Output Current: 3.95A Input Voltage: 100-240V Wattage : 75W Pin Size:...
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1answer
219 views

Can I trust this weird BIOS Message ending in 'thanks'?

So I started up my laptop today and was greeted with the following message (not a direct quote): The type of the AC adapter cannot be determined. This may interfere with your computer's performance. ...
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4answers
15k views

Laptop charger disconnects and reconnects, charger or battery broken?

I've got an Acer Aspire One netbook (AOA-150) and there's obviously something wrong with it. The charging port gets VERY HOT and the charger seems to disconnect and reconnect quickly sometimes. This ...
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5answers
10k views

How does a laptop wattage compare to that of a desktop computer when their AC Adapters don't even list wattage? [closed]

I have several laptops of various brands. Each has an AC adapter that's designed for the specific computer it came with. I also know there are universal adapters can adjust their voltages ...
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1answer
15k views

Charge Apple computers bought in USA to use in Europe

I bought an Apple MacBook in the US and would like to use it in Italy. On the cable, it says: 2.5A 125V. What are the possible solutions to charge my computer? Use an adapter, a plug converter or an ...
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4answers
125 views

AC protection for laptop

I think there is something wrong at my apartment. Two weeks ago my girlfriend's AC adapter died and yesterday mine. Can I buy something to protect the AC adapters from whatever bad is coming from the ...
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3answers
167 views

Damaged laptop power plug?

Should I be worried about a damaged computer plug? My parents (or someone) knocked it over today. I notice it is no longer straight. There seems like a little tear in the rubber from the fall. I'm ...
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4answers
5k views

Is it OK to use 17“ Macbook Pro AC adapter on a 13” Macbook Pro?

17" Magsafe Adapter: Input: 100-240V - 1.5A 50-60Hz Output: 16.5-18.5V - - - 4.6A Max 13" Magsafe Adapter Input: 100-240V - 1.5A 50-60Hz Output: 16.5V - - - 3.65A The Answer: I am looking for a ...
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2answers
2k views

Will my new laptop AC power adapter work with my laptop, given these specs?

My laptop's AC adapter went out last night and I bought a replacement today, but will not be able to test it until tonight or tomorrow. My laptop is a Gateway P7801-U, but unfortunately Gateway does ...
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1answer
2k views

Is it safe to use a “Universal Laptop Adapter”?

I have seen a "Universal Laptop Adapter" sold in a computer shop before. I am thinking of getting one for a laptop. Is it safe to use? What differences are there between one of these and a typical ...
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5answers
79k views

How to test AC adapter?

I have a Toshiba laptop that is no longer receiving power when it's plugged in. How can I tell if problem is in the AC adapter or in the actual laptop? I could buy a replacement adapter (this is the ...
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1answer
4k views

What should I do about a 110v adapter that I plugged into a 220v socket?

I plugged a new 110v Belkin router into a 220v socket. It had an adapter so I'm assuming the router is fine and the adapter just blew its fuse. I live in the Philippines, where there isn't any service ...