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Questions tagged [charger]

205 questions
125
votes
6 answers

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 from some of these power supplies. This happens…
rishat
  • 1,407
23
votes
4 answers

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

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
  • 311
17
votes
7 answers

What do I need to consider when using a USB-C charger with a laptop that has a proprietary charger?

I had several laptops, and each of them had a different charger, that is physically incompatible with another laptop. Even two laptops of the same company (e.g. HP Zbook and HP EliteBook) have incompatible chargers. In contrast, there are so-called…
Erel Segal-Halevi
  • 2,245
16
votes
3 answers

Using a higher current charger on a laptop which requires a lower current

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 input of 19 V at 3.42 A. Its charger has stopped…
Gelo
  • 161
15
votes
12 answers

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 different Dell laptops, however until recently I didn't…
Grey Panther
  • 318
14
votes
3 answers

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 little unique. Firstly, this laptop, unlike my…
skv
  • 384
14
votes
1 answer

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 adapter connector/jack is not fully inside the…
fatFeather
  • 469
10
votes
3 answers

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 it’s designed for the MacBook Pro, so only comes…
camzenxbt
  • 111
10
votes
5 answers

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 Home 64 bit) makes an annoying beep sound whenever…
Natalie Clarius
  • 439
8
votes
4 answers

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 laptop, the light immediately turns off and my laptop…
Corey
  • 1,262
8
votes
4 answers

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
  • 1,464
8
votes
1 answer

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 full load, just the 3rd identification wire is…
UDPSend
  • 89
7
votes
1 answer

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 there other options?
Gabe
  • 845
7
votes
2 answers

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 replace the broken plug with one from a 4 pole USB-C…
nidi
  • 635
7
votes
1 answer

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 message that says I am connected to a "low-power…
sffc
  • 417
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