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Questions tagged [charger]

196 questions
118
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
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22
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
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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
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14
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
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14
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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…
Eyal Cohen
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13
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
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9
votes
4 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
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8
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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
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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
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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
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7
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1 answer

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 full load, just the 3rd identification wire is…
UDPSend
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7
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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
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6
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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
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5
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4 answers

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 when I opened it on the product label it says that…
Mirela
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5
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2 answers

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 specs they have are a bit different. Old…
ziga
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