Questions tagged [charger]

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119 votes
6 answers
235k views

Why do some AC adapters and power supplies generate a whining noise, and what can I do about it?

I have many different AC adapters and power supplies for a variety of devices, ranging from small 5V/1A USB chargers to laptop power adapters and desktop PSUs. However, I often hear a whining noise ...
rishat's user avatar
  • 1,337
22 votes
4 answers
32k views

Can I safely charge my laptop with a non-standard, third-party charger? [duplicate]

I have a Toshiba Satellite laptop. My charger has stopped working. I have access to a Lenovo charger. Can I use this charger on my laptop?
user8418's user avatar
  • 301
16 votes
3 answers
41k views

Using a higher current charger on a laptop which requires a lower current [duplicate]

Possible Duplicates: Laptop power supplies, does current matter? Can I use a power adapter with more current but lower voltage on another laptop? I have an ASUS K50IN laptop which requires an ...
Gelo's user avatar
  • 161
14 votes
12 answers
90k views

Is it normal for the laptop charger to spark when plugging in?

All the laptop chargers I had until now sparked whever I plugged them in. This is true for my old charger (the bulkier / rounder Dell model) and the new charger (the flat Dell model) with two ...
Grey Panther's user avatar
14 votes
1 answer
4k views

Is it okay that part of the power jack is outside the device?

I have some devices whose DC adapter connector/jack is only partially plugged in. For example, my monitor has an AC to 180 W DC power supply. When connecting the transformer to the monitor, the DC ...
fatFeather's user avatar
14 votes
3 answers
7k views

Laptop Either Shows 100% or 0% Charge

I have a strange issue with my Compaq CQ 61 running Windows 2012 (server) and I have Googled for it really long and hard and also searched other questions here but in vain. I believe my problem is a ...
skv's user avatar
  • 384
10 votes
5 answers
91k views

Disable beep sound when plugging/unplugging laptop charger

My issue is the same as in this question, but none of the answers there helped solving my problem, so I'm hoping to get alternative suggestions here. My laptop (Acer Aspire S5-391 with Windows 10 ...
Natalie Clarius's user avatar
9 votes
3 answers
21k views

Does a USB-C Power Delivery splitter exist?

Does a USB-C Power Delivery splitter exist? I’m considering purchasing an Apple 96W USB-C charger, which could Fast-Charge 2-3 devices at one time with that amount of power. The only downside is that ...
camzenxbt's user avatar
  • 101
8 votes
4 answers
10k views

Is it safe to try charging my laptop with a USB-C PD charger that has less wattage than recommended?

I have a Thinkpad x270 and read that I can charge it using USB C Power Delivery and that it draws 45W. I also have a 36W USB C charger. What would happen if I combined those two?
d33tah's user avatar
  • 1,403
8 votes
4 answers
72k views

Laptop charger dying after plugging in?

My laptop charger's transformer has a green light on it that indicates that it's plugged in and working. When I plug it into the wall, the light goes on as expected. As soon as I plug it into the ...
Corey's user avatar
  • 1,252
8 votes
1 answer
13k views

How to bypass Dell charger detection?

As the title says, I want to bypass the adapter detection, because it disables the battery charging, and slows down the CPU (I have killed this with ThrottleStop). The charger is working fine under ...
UDPSend's user avatar
  • 89
7 votes
1 answer
29k views

USB-C Chargers: Is it safe to charge a phone with a laptop's power supply?

I have an HP Chromebook and a Nexus 6P smartphone, and both of them use USB-C connections for charging. When I plug the Chromebook into the Nexus's charging cable, it works fine and I just get a ...
sffc's user avatar
  • 417
7 votes
1 answer
599 views

Can I wirelessly charge my laptop?

I think I read somewhere that Dell was creating a wireless laptop charger but I haven't heard anything about it in the consumer market. Is this something that will be available in the next year? Are ...
Gabe's user avatar
  • 825
5 votes
4 answers
4k views

Can you charge any device with Mini-B USB receptacle from any charger with Mini-B USB plug?

I've got several devices with a mini-B USB receptacle - including my mobile phone/PDA and some headsets. Each came with its own AC adapter. I'm wondering if I can charge any of these devices from any ...
Jim's user avatar
  • 1,219
5 votes
2 answers
28k views

Howto repair broken USB-C Power Delivery cable?

tl;dr: What are the requirements for a PD capable USB-C cable and plug? As the USB-C plug/jack of my Dell charger is mechanically broken, I want to replace it. So far, my naive attempt to simply ...
nidi's user avatar
  • 605
5 votes
3 answers
27k views

Is it safe to use any USB charger for charging any USB device?

I have an apple USB AC charger which is rated to provide 5V, 1A output and a Sony mp3 player NWZ B143F. I don't know the spec of Sony audio player. But I have another mp3 player from Transcend which ...
Vineet Menon's user avatar
5 votes
4 answers
50k views

Cann I use a 19.5V 4.62A laptop charger for 19V 4.74A laptop?

My laptop charger (Toshiba Satellite L850 18U - 19V 4.74A) has been broken. So I bought a new charger - Trust 90W charger. According to the new charger's packaging it is suitable for my laptop. But ...
Mirela's user avatar
  • 51
5 votes
4 answers
9k views

Removing Battery and running the laptop in plugged-in mode?

Is it fine, if I remove the battery from my system and run in by having it plugged-in by the charger? Will it cause any damage to the system? My Laptop is an HP Probook 4320s (which comes under the ...
user avatar
5 votes
2 answers
10k views

Can I use different HP power adapters in one computer?

My old HP adapter burned out and it will take 2 weeks for me to get a new one. In the meantime, I borrowed a HP cable from a friend. Is it possible to use a different HP adapter in the mean time? The ...
ziga's user avatar
  • 51
4 votes
3 answers
3k views

Windows 10 laptop: is it possible to find when the laptop charger was plugged-in the last time?

I have Windows 10 laptop. I cannot find the laptop charger. So, I am trying to recall when the laptop charger was plugged-in the last time. On Windows 10 is it possible to find when the laptop charger ...
pmor's user avatar
  • 308
4 votes
2 answers
3k views

Do the PPS fast charging and USB PD standards only specify USB-C cables?

I'm shopping for a USB charger: I am trying to buy a USB charger that supports the PPS fast charging and USB PD standards, however all such the USB chargers I could find so far have a USB-C output and ...
Franck Dernoncourt's user avatar
4 votes
2 answers
1k views

Is it safe to use charger for macbook with a 15" macbook pro?

I just got a new 15" macbook pro to replace my old macbook. I have a couple extra chargers for the macbook, and I'm wondering if it's safe to use them to power the pro. Normally I wouldn't think it'...
Herms's user avatar
  • 9,632
4 votes
4 answers
17k views

Is it safe to insert USB-C charger into a laptop that does not support charging via USB-C?

Say, there's a laptop with USB-C port, its specs don't mention support for USB Power Delivery, but some pages on the Internet say that a laptop may support USB charging even when it isn't specified. ...
user's user avatar
  • 1,220
4 votes
3 answers
409 views

Is it ok if a replacement laptop charger is slightly out of spec?

The original charger for my HP laptop stopped working, so I bought a third-party compatible charger from Lap-Life. Here's a comparison of the specifications: Charger Power Input Output HP 90 Watt AC ...
shashank gandhi's user avatar
4 votes
2 answers
3k views

Charging Android phone from MacBook while MacBook is charging, all via USB-C

I have an M1 MacBook Air with its original power supply/charger and original USB-C cable. All working great. I also have a cheap Android phone (Redmi 10C) with USB-C. Sometimes when I'm on the road I ...
hippietrail's user avatar
  • 4,573
4 votes
1 answer
35k views

Can we use macbook pro charger to charge Lenovo thinkpad T470 laptop

is it safe to use MacBook pro charger to charge my ThinkPad t470 laptop
Rohith Yeravothula's user avatar
4 votes
0 answers
1k views

Laptop Freezes until I either insert or remove charger

I have an odd bug and I'm not sure what might be causing it. I have a 15.6" Xiaomi Notebook Pro with a USB-C charger. Every so often, my laptop screen freezes. Music still plays in the background and ...
Skylar Kennedy's user avatar
3 votes
2 answers
7k views

Can I supply less amps (3.42 vs 3.95) if the laptop is rated at 3.42 anyway?

I have an Acer Aspire 5000. When I turn it on, the amber power LED blinks 6 or 7 times, and no booting happens. From my Googling, it seems to be a power issue. I tried swapping out for a different ...
user13743's user avatar
  • 1,721
3 votes
3 answers
12k views

Is it ok to to plug your laptop charger in 16 A socket?

I have an Asus (core i5) laptop. Is it ok to charge my laptop by plugging into a 16 Ampere socket which is normally used for ACs or refrigerator.
krunal's user avatar
  • 41
3 votes
2 answers
5k views

Is it possible to charge a laptop via a USB-C-to-DC adapter plug?

I own a Acer laptop from 2017, which came with a brick-sized 19V/3,42A power supply that's connected via a 5.5/2.5mm DC plug. Although the laptop features a USB-C port, it unfortunately doesn't ...
lmoly's user avatar
  • 290
3 votes
5 answers
15k views

What ampère power supply must I use for my laptop charger?

I have very little idea about electronics. Today I received a replacement charger for my laptop as the old one had been broken, it did not come with the plug attachment. I went to set it back up today ...
epbq's user avatar
  • 31
3 votes
1 answer
223 views

Why are there chargers available for the same laptop with different wattages?

I have Acer Aspire 7745G and I’m curious why I can find supported chargers with different wattages? Here are the specs for each charger: 65W (19V/3.42A): from Laptop Charger Factory. 120W (19V/6.32A)...
Pranciskus's user avatar
3 votes
2 answers
13k views

Toshiba laptop charger not working properly?

I have a Toshiba laptop and basically, for the laptop to charge I have to apply a lot of pressure to the charger, so it shifts to the right, and it charges. My laptop's battery holds only 10 minutes ...
Vlad's user avatar
  • 606
3 votes
0 answers
1k views

Lenovo ThinkPad x250 wont charge when On. Installing Windows fixes this

I have a Problem with my ThinkPad and Linux. Debian Jessy to be exact. I am using all the original parts Lenovo provided me with. After approximately 8 months now my notebook refused to charge when ...
felix m's user avatar
  • 51
3 votes
3 answers
5k views

DELL Inspiron N 5050 doesn't Power On until I Plug-in the Charger

I bought a Dell Inspiron N 5050 last week, and recently discovered a problem with my laptop. It doesn't Power On until and unless I Plug-in the charger. After I plug-in the charger, it boots up fine,...
hannanessay's user avatar
2 votes
6 answers
39k views

Is it safe to plug USB devices on 220v wall sockets?

I have an ipod touch and since then I've been charging it on the PC via USB. I just want to know if it is safe to use those wall socket chargers for USB devices? Is it different on every device, or is ...
user avatar
2 votes
3 answers
7k views

Why does my macbook give a slight tingling sensation when it is charging and what could i,we or Apple do about it? [duplicate]

I have been facing this problem since the time of purchase. I think the shocks go away once it's fully charged. I experience shocks regardless of whether I sit directly on the tiled floor at my ...
Tejas Shetty's user avatar
2 votes
4 answers
3k views

Are there laptop power plugs which plugs into the socket directly? [closed]

For a desktop computer, the power plug always plugs into the socket directly. However, this doesn't seem to be the case with laptops. It always comes in two parts. Are there laptop power plugs which ...
Pacerier's user avatar
  • 27.2k
2 votes
2 answers
6k views

Is my Power Supply Unit fried?

So my laptop just started smoking where I plug my charger in. I run a netbook, the Acer Aspire One. My charger won't charge it, because when I plug my charger into the netbook, the charging light ...
Rob's user avatar
  • 747
2 votes
3 answers
683 views

Laptop cannot run on battery - dies instantly when removed from mains power

My laptop is a Toshiba Satellite L640. If I remove the laptop charger, my laptop will instantly die, so I can only use the laptop whilst plugged in. What can I do to fix this?
dechie's user avatar
  • 21
2 votes
2 answers
5k views

Can a USB-A charger be used for USB-C laptop charging using an adapter?

I have a DELL XPS 13 9370 with a DELL H754V84 battery that can only be charged using a USB-C port. a USB-A > USB-C adapter a USB-A charger. It can output 9.0V 1.65A or 5.0V 2A Can I safely use ...
Dune's user avatar
  • 23
2 votes
1 answer
5k views

Using a higher wattage charger for my netbook

Can I overload my netbook if I use a charger with a higher wattage than the one indicated for my netbook. I know that the charger has a protection in case of an overload. But what if, for example, the ...
Amer A.'s user avatar
  • 23
2 votes
3 answers
11k views

Will I damage the laptop if I always use a travel adapter to charge it? [closed]

This scenario could happen if I bought a laptop in one country but later moved to live in another country with a different power standard. Will it be safe to just add a travel adapter on the plug and ...
xji's user avatar
  • 808
2 votes
2 answers
17k views

Can low voltage damage laptop or it's battery?

Sometimes I get very low voltage in my house. I am worried if I connect my laptop charger to the socket, will it damage the charger, battery or the laptop itself?
vikrant's user avatar
  • 139
2 votes
2 answers
5k views

In general, do 3rd-party laptop AC adapters / chargers work reliably?

The AC adapters for my 2 dell laptops wore out very quickly. One supplies power but won't charge the battery (it's about 3 years old, the other is a bit newer). Both have worn through to the ...
MGOwen's user avatar
  • 606
2 votes
1 answer
894 views

Can as device that runs of USB be powered from a charger?

I have a Dreamgear PS3 Elite Gaming Headset that needs to be plugged into a USB port to power it, it cannot be used as just a "normal" set of headphones though it has a standard 3.5" plug as well (don'...
darrennie's user avatar
2 votes
4 answers
6k views

can I use a USB 2 charger with a USB 3 cable?

I have a Samsung Galaxy S5 phone that has a mini-USB3 socket. It came with a USB2 charger and cable. I can buy a new USB3 cable, bud did not find a charger. Can I use any USB2 AC adaptor to plug my ...
Enrique's user avatar
  • 31
2 votes
2 answers
4k views

Why does my new Dell laptop charger make a weird noise?

Got a brand new dell xps laptop as a gift about 2 months ago and the tranformer of my charger is making that weird noise that sound like a cricket! What is that noise ? Should i get a new charger ??
keliz's user avatar
  • 21
2 votes
1 answer
34 views

My computer is not turning on [closed]

I'm not sure I'm on the right site, but I really need help. I got today a laptop dell core i7 10th generation. I put it on charger. At first it was charging normally. I went away for a few hours, and ...
user716591's user avatar
2 votes
1 answer
1k views

Laptop keeps switching between being plugged in and not plugged in with external battery

When I have my external battery hooked up to my laptop, it shows as being "plugged in, not charging" for a few minutes but then after about 10 minutes or so, it switches between being plugged in and ...
AlphaOmegaStrife's user avatar