Questions tagged [charger]

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111
votes
6answers
210k 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 ...
22
votes
4answers
29k 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?
16
votes
3answers
38k 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 ...
13
votes
3answers
5k 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 ...
11
votes
12answers
73k 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 ...
8
votes
4answers
69k 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 ...
7
votes
4answers
7k 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?
7
votes
1answer
23k 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 ...
7
votes
1answer
549 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 ...
6
votes
0answers
7k views

How to kill 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 ...
5
votes
4answers
3k 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 ...
5
votes
3answers
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 ...
5
votes
4answers
50k 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 ...
5
votes
2answers
9k 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 ...
4
votes
2answers
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'...
4
votes
0answers
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 ...
3
votes
3answers
5k 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.
3
votes
5answers
11k 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 ...
3
votes
1answer
4k 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 ...
3
votes
1answer
191 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)...
3
votes
2answers
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 ...
3
votes
4answers
9k views

Removing Battery and running the laptop in pluged in mode?

Is it fine, if I remove the battery from my system and run in by having it pluged-in by the charger? Will it cause any damage to the system? My Laptop is an HP Probook 4320s (which comes under the ...
3
votes
0answers
858 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 ...
3
votes
3answers
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,...
2
votes
6answers
32k 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 ...
2
votes
3answers
6k 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 ...
2
votes
4answers
2k 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 ...
2
votes
2answers
5k 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 ...
2
votes
3answers
670 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?
2
votes
2answers
989 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 ...
2
votes
1answer
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 ...
2
votes
3answers
5k 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 ...
2
votes
2answers
11k 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?
2
votes
3answers
32k 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 ...
2
votes
2answers
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 ...
2
votes
1answer
755 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'...
2
votes
4answers
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 ...
2
votes
3answers
358 views

HP compatible charger

My orignal HP charger was: Power: 90Watt Input Volts: AC 100-240V 50/60 Hz Output Volts: DC19V 4.72A It stopped working and then i brought a HP compatible charger: Lap-Life Specs: Power: 90Watt Input ...
2
votes
2answers
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 ??
2
votes
1answer
29 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 ...
2
votes
1answer
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 ...
1
vote
2answers
860 views

Can I use different laptop charger- similar Voltage, higher Ampere? [duplicate]

My original laptop charger was output 20V 3.25A. Now I have a charger with output 20V 6.75A. Can I use it? (The real data: Can I charge Lenovo Yoga 11s with Lenovo IdeaPad 15?)
1
vote
2answers
432 views

Can I use 19V 2.40A charger?

Can I use a charger with the following values: Input 100-240V 1.5A Output 19V 2.40A To replace Input 100-240V 1.6A Output 19V 3.42A
1
vote
2answers
2k views

Fix a laptop charger

I have a fairly common problem with charger. The wire on one end is getting pulled out. How can I fix this problem? My hunch is that it should be possible to open up the charger, and put the wire ...
1
vote
2answers
896 views

Using alternate rating laptop charger [duplicate]

I am using Sony Vaio and laptop charger burned its rating was 19.5V-3.9A, i am trying to find the same model but I have been only been able to find one with the rating 19.5V-4.7A. Can I use this, any ...
1
vote
2answers
2k 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 ...
1
vote
2answers
610 views

Charger keeps disconnecting - Windows issue?

My Hp laptop charger keeps disconnecting and reconnecting. After 20 secs, it disconnects, and 5 secs later, it reconnects. I've noticed this behavior only when laptop is turned on. Here's what I tried:...
1
vote
2answers
18k 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
1
vote
1answer
312 views

Does Laptop power supply matter? [duplicate]

I have a power supply which is 19.5V and 6.15A. My friends power supply or laptop probably broke and his power supply has a 19V and 6.32A. His charger comes with an adapter which fits my plug ...
1
vote
1answer
2k views

System keeps changing power mode while gaming

Recently my laptop keeps changing power mode while gaming, like if i disconnected the charger physically. I don't have another charger to test, this is the stock one which has been running fine for 3 ...