Questions tagged [charging]

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237
votes
6answers
184k views

Should laptops remain plugged in when their battery is 100% charged?

When your laptop's battery is 100% charged, should you leave it plugged in so any battery power doesn't get used, or will that cause overcharging, overheating, etc.? Should the laptop be unplugged ...
54
votes
5answers
281k views

Can I use a charger with more output amperage than the device needs?

I've just bought a portable battery, but the portable battery don't comes with an adapter for the house current; it only comes with a USB cable so I can charge it with my laptop. My mobile phone came ...
15
votes
6answers
230k views

Can I charge a computer through its USB port?

Can I charge computers by inducing 5-volt into their USB connectors? Is this possible? I noticed that when my EeePC 900 is off but plugged in charger, there is power coming out of the USB port. Can ...
13
votes
8answers
10k views

Do newer laptop batteries still need to be drained before recharging?

10 years ago when I was doing hardware support it was best practice to fully drain a laptop battery prior to recharging in order to maximize its life. Is this still the case or can a battery now be ...
14
votes
8answers
42k views

Can I charge USB devices from a powered hub that isn't connected to a PC?

This will probably sound familiar to most of you... In my home, we have a whole bunch of devices that can be charged via USB (two iPhones, a BlackBerry, an iPod Touch, etc ad nauseam). We also have a ...
4
votes
5answers
13k views

Dell Inspiron 6400 indicates the wrong power adapter is plugged in and will not charge the battery

I am using the original power adapter with the Dell Inspiron 6400 laptop and now when it boots up I get the following error message. The AC power adapter type cannot be determined. You system will ...
24
votes
4answers
53k views

Will a mobile phone charge faster if plugged into a USB 3.0 port

Will a phone(or any device for that matter) charge faster if it is plugged into a USB 3.0 port compared to a USB 2.0 port? I know to assist charging you can turn features off(with flight mode) or ...
8
votes
5answers
85k views

Charge a laptop via USB power (500mA)? [closed]

My laptop is almost dead and I do not have the charger. Is there anyway I can DIY a charger for a laptop. Even if it takes 20 hours. To make it clear, I want to send power from a usb port on another ...
2
votes
4answers
5k views

Notebook computer battery says: plugged in but not charging with no further information. Is the battery bad already?

My 1.5 year old Dell Studio 15 notebook computer has a battery and I keep it attached to the notebook but 98% of the time I just plug in the power adapter. Lately when I unplugged the power adapter, ...
7
votes
2answers
25k views

Laptop battery charge management [closed]

I work on a HP laptop plugged in most of the time, and after a few months the battery went off-duty. Of course, I could remove the battery each time the laptop is plugged and replace it each time I ...
5
votes
4answers
21k views

Can I use a charger with less Ampere than the original?

I have a Sony Vaio PCG 61212W laptop. Because I got it from India, I needed a Uk power cord. I therefore ordered a power cord which is 3A and 250 volts. But the one I have with me currently reads 2....
48
votes
6answers
71k views

How do I keep a MacBook battery charged to only 70%?

A chemist told me that a battery should be charged to and used between 30-70%, and its very bad for battery life to completely load or unload it. He uses a utility program that always keeps the ...
14
votes
4answers
55k views

Can I use a USB hub to simultaneously charge a tablet and connect a USB drive? [duplicate]

What I do have (default way of charging tablets: A) vs. what I want to have (B or C): Can I have it? It’s a simple thing, so why not? How else can I use a tablet together with a portable hard disk (...
4
votes
3answers
7k views

Battery plugged in, not charging

This is a new battery and this gives the problem of Plugged In, Not Charging for the past two days. I have no clue as to why this is happening. Sometimes it does, sometimes it does not. Battery Wear ...
5
votes
1answer
21k views

Set specific USB ports to charge-only [duplicate]

On Windows, is there any way to make some USB ports to be charge-only? I do not want to alter the settings of the devices; I want to change the settings of the USB ports on Windows, so that any device ...
5
votes
1answer
10k views

Is it ok to remove a laptop battery while the laptop is running on AC power? [duplicate]

Possible Duplicate: Are notebook batteries generally hot-swappable? I have a charged laptop battery in a laptop that is running on AC power and charging the battery. Would it damage the battery ...
5
votes
5answers
11k views

Can a USB 2.0 cable support USB 3.0 charging?

I have some USB 3.0 ports on my motherboard which can deliver up to 900 mA of current I believe. If I plug in a USB 2.0 cable, I can still get up to 900 mA right? I have some devices that uses USB ...
4
votes
1answer
24k views

Stop my computer from charging when the battery is full? [duplicate]

I've read online before that if you charge your laptop when it is full, it will eventually "wear out" the battery. Is there a way to stop my laptop from accepting any charge when its battery is over ...
3
votes
1answer
5k views

Why doesn't my laptop battery charge while the laptop is in use?

Up until a week ago, my laptop has always been able to charge the battery while I'm using it. Now, it will not charge unless the computer is sleeping, hibernating, or turned off. The icon in the ...
3
votes
1answer
3k views

Why is charging mobile devices via USB so slow?

I'm developing apps so I have often a mobile device connected sometimes the battery just drains out and I'm wondering why this is happening. I was thinking about why is there no USB hub with Quick ...
11
votes
1answer
3k views

Will a USB 2.0 device charge faster plugged into a USB 3.0 port? [duplicate]

Fairly simple question, do USB 2.0 devices charge quicker if they are plugged into a USB 3.0 port rather than a USB 2.0 one. I’m not asking about a specific device I have, I just mean in general. I ...
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 ...
1
vote
2answers
1k 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?)
4
votes
2answers
7k views

Is it safe to use wall-socket -> USB chargers to charge any USB device?

Specifically, the charging unit that came with my HP Touchpad is a wall-plug unit with a female USB adapter on the other side (e.g. this pic on pcmag.com). Will this work for anything that charges ...
4
votes
1answer
15k views

How to disable a USB port in Windows (XP) and make it available only for charging?

How can I disable a USB port in Windows XP to make it available only for smart phone battery charging? I don’t want the users to be able to see the USB drive in My Computer, and the USB device ...
3
votes
6answers
57k views

Laptop battery says plugged in, not charging

My laptop's battery tray icon sometimes says "plugged in, not charging". How do I make the battery start charging again? Lenovo X230, 6-cell battery, Windows 8.1 64-bit. This question says that ...
2
votes
3answers
8k views

HP 4530s laptop works with power cord but won't charge battery

Suddenly, two days ago my HP 4530s laptop stopped to be able to charge its battery. Since I was noting that the whole battery was dying since some weeks ago, I bought a new one. Either with the old ...
1
vote
4answers
4k views

plugged in, not charging + ONLY runs on AC power

Laptop Model: Acer Aspire V5-473P Laptop Age: 22 months OS: Windows 10 (Upgraded 6 months ago) Problem Occurred: 5 months ago. Problem Description: Battery icon suddenly started showing "plugged ...
1
vote
1answer
2k views

Can I charge my HP Probook 430 G5 from 2018 with my Galaxy S10+ USB-C Adapter

I need to charge my Laptop but I don't have my normal charger here, so I've done some research about charging possibilities and found out that my Laptop has a USB-C Port which is also a second ...
1
vote
1answer
619 views

How risky is it to use an underspecified charger?

I forgot my 5V/2.1A charger at work and I only have a 5V/1A charger at home. I tried plugging in the device and it seems to work (battery is loading). Theoretically speaking, what bad things could ...
1
vote
4answers
4k views

Battery never charges upto 80% instead of 100%

My vaio battery charges only upto 80%. Why is that so? It also tends to discharge too fast providing less working time. How to proceed to obtain 100% charge?
0
votes
1answer
419 views

Need to charge my laptop from my powerback? [closed]

I have a power bank that that has USB outputs for charging. But the cable I got with it only goes into my Samsung Galaxy S4. What I need is a cable to jam into that big ol' hole on my Toshiba laptop ...
0
votes
7answers
58k views

Dell Inspiron 1545 - “plugged in, not charging”

A family member brought me their Dell Inspiron 1545 a few hours ago (I'm a software engineer so I know how to fix any and all computer issues, right??). They just bought a new battery for it that won'...
0
votes
1answer
1k views

Can I use Lenovo Type-C charger (20V) with Macbook Pro 2019 (20.3V)? [duplicate]

My Lenovo Thinkpad laptop came with a Type-C charger that has multiple output specs. The output specification of the Lenovo charger is: 20V/3.25A, 15V/3A, 9V/2A, 5V/2A. Can I use this charger to ...
0
votes
0answers
295 views

battery charging icon issue

I have come across a problem today which hasn't occurred before. The adapter was plugged in but it wasn't on the percentage as I wanted to be at. So I removed the adapter for a while and then ...