All Questions
51
questions
0
votes
0
answers
50
views
I would like to know how to add a 2nd USB charging port to a Lenovo YogaBook with only one USB 2.0 port used for both data and charging?
I would like to charge a Lenovo YogaBook laptop while using the data port. This isn't supported by the laptop unless I am wrong. I have followed some tutorials which supposed to work but it didn't.
I ...
0
votes
2
answers
251
views
Bluetooth and USB issues on desktop replacement laptop without battery
Despite age and dead battery, Dell M6700 laptop serves well as a desktop replacement for tasks like email, social media, and video streaming for a family member. However, recently Bluetooth ...
- 156
4
votes
2
answers
2k
views
USB C charging on Dell Inspiron laptop: OnePlus 65W phone charger
I have a Dell Inspiron laptop with a USB C port. The normal charging is 65W adapter via the Dell power (charging port). If I connect this to my OnePlus phone charger which is also 65W somehow it does ...
- 588
0
votes
0
answers
350
views
100w USB-C to DC power adapter charging issues
I've been encountering some issues with a custom charging setup for my Razer Blade 15 laptop. My blade is a 2020 model that does not support USB-C charging. I wanted a more compact solution than the ...
0
votes
2
answers
968
views
Laptop dead from overvolted usb-c
Laptop is EVGA SC17
Usb-c 3.1 (non thunderbolt)
Battery 3.7v 550mah
Ok so i stupidly was hotwiring a battery to charge via my laptops usb-c port, I know i should have used my powersupply or even a usb ...
- 11
0
votes
0
answers
66
views
Unable to charge HP Envy Intel i7 11th gen with Comsol 25600 power brick
I purchased and HP laptop as above. The battery won't get through a full day on a charge, so I purchased a Comsol power bank. I have contacted Comsol and have been told that it should charge a laptop ...
- 847
0
votes
3
answers
3k
views
How can I determine how many amps I need to power/charge my Chromebook
The power supply that came with my Chromebook died recently and I've had a hella time just to find a charger that's just right for it. When studying different recommendations from different sources it ...
0
votes
1
answer
323
views
If I connect a USB-HUB to a USB 3.0 port and then plug my android tablet in the hub for USB Tethering, How much power transfer should be happening?
So, I have been tethering my tablet with my PC for a long time and I noticed that It charges pretty fast when connected through USB hub compared to normal tethering on USB 3.0 port. I installed Ampere ...
0
votes
1
answer
73
views
Vaporizer not recognized by windows when charging through USB [closed]
I would like to check the voltage (V) and current (A) with which my XMax Starry v3 vaporizer is being charged. I have tried different ports but it doesn't seem to make a difference. Do devices that ...
1
vote
1
answer
5k
views
If I charge my iPhone using MacBook USB, while the Macbook is charging, will that affect battery life negatively?
If I charge my iPhone using a MacBook USB port while the MacBook is charging, will that affect battery life (of either the MacBook or the phone) negatively?
I would think not, since the battery is ...
- 11
1
vote
2
answers
8k
views
Is it safe to use 70% isopropyl alcohol on electrical contacts on any device with a battery as long as it's powered off?
I'm talking about USB ports and charging ports for laptops and phones. I want to use a cotton swab or a microfiber cloth dampened with alcohol to clean the inside. Compressed air won't do it.
They're ...
- 121
0
votes
1
answer
35
views
I have an old Dell computer but the charger does not work
I have an old dell computer that has the regular charging socket malfunctioning.
I have been trying to find if I can use a charger that has USB C and then use an adapter on the laptop to convert USB A ...
0
votes
1
answer
248
views
Charging tablet while in OTG
Similar questions have been asked before, but the posts are years old and not really answered.
So:
I have a tablet with USB-C or Lightning port (female). I want to connect a special 5G receiver and a ...
- 1
0
votes
0
answers
46
views
How to use all the 45 Watt out of the Xiaomi Mi Power Bank Pro 3
I have been working on this project that consists on making a somewhat portable computer... I intend on using a Raspberry Pi and an old laptop monitor to get the job done. The thing is that I bought a ...
0
votes
1
answer
299
views
Lenovo T495 - Opensuse Tumbleweed - USB does not work when on battery
I have a Lenovo T495 and it works fine when on mains. However when on battery, USB devices (flashdrives, hdds, etc) are not detected. Plug in the mains, and they are detected fine. Running kernel 5....
- 145
1
vote
2
answers
3k
views
Charge laptop with USB PD at 20V even if it draws less than 45W?
I want the possibility to charge my Laptop (19V/3.42A, Acer Aspire 5 A515-52G) from a power bank. Since my laptop only has the ordinary barrel power connector but power banks usually come with a USB-C ...
- 45
0
votes
2
answers
46
views
My mouse, just says Microsoft on the bottom, and doesn't work
I changed the mouse batteries a few days ago and the mouse has not been working. I don't know the specific model or type of mouse. It is wireless and there is a USB connector in my computer. The ...
0
votes
1
answer
365
views
Safe? ..Using a Y USB cable to power a dash cam from 2 power sources [closed]
I would like to power a dashcam from 2 power sources (the car cig lighter & battery pack) using a Y-USB cable (1 female - 2 male). I would connect my dash cam to the female end. Then plug one of ...
- 1
0
votes
1
answer
245
views
Can I charge a simple Nokia phone which has USB input (5V=450mA) with a 5V=2A/7V=1.8A/9V=1.8A/12V=1.3A supply? [closed]
I have a Nokia Asha 501 Dual Sim phone which comes with the power supply as stated in the title. It recently broke, and I decided to test if the phone's USB port which I thought was only for data ...
- 1
1
vote
2
answers
1k
views
USB A to C cable with USB 2.0 charger, low current
Note: this is not about a specific device but the general aspects of charging a USB device using accessories with different USB standards so I hope this fits here.
I've got a Samsung Galaxy ...
- 125
4
votes
2
answers
598
views
Can phones/tablets avoid charging from USB power?
I know that some laptops (e.g. Lenovo ThinkPad) have user-controllable software to disable battery charging even when AC power is plugged in. This feature takes precedence.
When a typical mobile ...
- 720
0
votes
1
answer
179
views
How to charge an usb-c equipped laptop from a powerbank
I have got a laptop that can only be charged via usb-c.
I also have a powerbank (45000mA) that not only has usb outputs, but also an output (up to 20V) for laptop charging. It came with 11 adapters ...
- 15
2
votes
1
answer
52
views
How do capacity meters on USB drives if there is no battery or power source in the drive itself?
Some USB flash drives, such as the Lexar JumpDrive M10, have some sort of capacity meter on them, indicating the space left on the USB flash drive even when it is unplugged.
How does that work exactly?...
- 23
1
vote
1
answer
1k
views
Could overvolting the USB port on a laptop cause battery drain issues?
So yesterday I was working on a project with an Arduino Mega. The Arduino was being powered with a 9V battery plugged into the 5v and GND pins on the board. I needed to make some changes to the code, ...
- 111
1
vote
2
answers
602
views
What does a USB stick do on a powered USB port when PC is turned off?
There are USB ports that are powered, even if the Laptop is turned off. AFAIK, those ports have yellow color or they have a USB icon and a battery icon.
It's clear to me that I can e.g. load my phone ...
- 6,085
1
vote
0
answers
60
views
USB mouse switched off when laptop on battery and temperature rises
My USB mouse is disabled when my laptop is running on battery power
and the CPU or GPU temperature rises.
It enables the mouse when the temperature is down
or when I plug in the laptop power cable.
...
- 11
0
votes
1
answer
2k
views
How do I join two USB power sources without blowing anything up? [closed]
I want to have a portable battery that I can charge either with a solar panel, or with a wall outlet. I'm lazy, so I don't want to manually switch any cables to make this happen. Also, the goal of ...
- 1
0
votes
1
answer
2k
views
USB Power consumption in standby v. active
I am trying to work out a power budget for a battery powered device i am making.
I have a USB hub with 4 ports. Each port has a device that needs communications (that is, none of them are for ...
0
votes
1
answer
91
views
How to connect a camera to a Windows PC for charging only?
I have a Xiaomi camera and I want to connect it to Windows PC for charging, but I want the camera to be turned on. There is a feature that you can have the camera enabled without battery - when the ...
- 105
0
votes
1
answer
664
views
Will 14.5 v @ 2.0 Amps harm my MacBook 12
I'd like to charge my MacBook 12 using my PowerBank. I have a PowerBank with adjustable voltage control it has USB output too. Though when I use USB output it draws only 0.5A @ 4.75V on average and ...
- 103
-3
votes
1
answer
7k
views
How to charge a laptop through the usb port [duplicate]
I know that there is a way to charge your laptop by plugging a USB connector into your laptop and then plugging the other end into a wall charger as I know a friend with a ThinkPad who does it. I just ...
1
vote
1
answer
3k
views
Phone Discharging When Connected to Laptop
I have got a Microsoft Lumia 532 which keeps discharging at a greater rate than normal when connected to my laptop (Dell XPS L502X) using a USB cable, instead of charging. I am not really sure about ...
- 11
0
votes
2
answers
15k
views
Is it safe to use the 5v/2A charger on a device with 1.5A max input [closed]
I have a 8000 MAH rechargeable lantern with power bank, the max input is 1.5A.
Based on my recent research, this is what I am concluding, please confirm if my finding 1, 2 are correct. #3 is a ...
- 11
2
votes
1
answer
3k
views
Charge my laptop/external laptop power bank from usb-output-only power banks?
I want available backup power for my laptop (ASUS ux51vz, 19V/4.74A), I've got a pile of 10-20k mAh power banks, and I'd like a solution to marry the two somehow.
I know that I can get an external ...
8
votes
6
answers
26k
views
Charging a laptop though a USB-C power port with a low voltage/amperage
Let's say we have a new laptop with a USB-C port - like the new Macbook1 or the Chromebook pixel which, yes, are meant to be charged through these ports -, a good solar panel for smartphones (5V 3A ...
- 1,401
1
vote
2
answers
5k
views
Is it fine to run a dc motor through USB cable connected to my laptop?
I have a dc motor which needs more than 10V to run efficiently, so instead of running it on electric cells, I usually run it using my laptop's power. I connect a USB cable to my laptop and the other ...
- 111
3
votes
2
answers
218
views
What will happen powerwise if you plug a USB-C device to another USB-C device?
If you have a USB-C phone or tablet and you plug it into a laptop with USB-C, which device gets charged? Or no charging will occur? People charge their phones through their laptops all the time, how ...
- 2,931
0
votes
2
answers
16k
views
Can I charge my laptop using a power bank using my laptop charger?
I have a Dell XPS-1530 laptop with a 9 cell battery. It's working fine but I was just wondering whether I could use a power connector or something to plug my laptop charger's 3 pin plug into another ...
- 1
3
votes
4
answers
7k
views
Does charging a Li-ion battery smart phone through a computer's USB port put additional strain on the battery vs a wall charger?
I was curious about this. I read that you should generally avoid completely discharging and then full charging your Li-ion battery because this can strain the battery (though some suggested doing this ...
- 1,045
1
vote
1
answer
1k
views
Windows Tablet data and power from one USB
My Windows tablet has one mini USB port which is used for charging the tablet's battery as well as for data transfer but because there is only the one USB port it won't let me do both at the same time....
1
vote
3
answers
99
views
Safe to charge USB devices while doing other power-consuming tasks?
I just recently got an iPod, and I completely forgot that without an adapter you have to hook it up to your computer by USB port to charge it, sync, etc. I currently have it plugged into the front USB ...
- 39
3
votes
2
answers
391
views
USB External Battery Packs for devices other than Phones/Tablets
I'm trying to build a wireless/mobile monitor. The monitor will be included in a wheeled cart, so I have some limited storage available in the cavity behind the monitor, but not much. The cart itself ...
- 28.2k
1
vote
2
answers
74
views
Is MicroUSB powerful enough to charge MiniUSB devices?
I have a few MiniUSB devices, living in a very MicroUSB-dominated world. It would be much more convenient for me to leave a MicroUSB charger plugged in all the time, and just throw on an adapter when ...
- 13.9k
0
votes
1
answer
58
views
tablet + wired network + recharging
Can any tablet simultaneously recharge and use a non-wireless network?
The goal is like an always-on kiosk-like touchscreen, in a location that forbids wifi. Ethernet (not Internet) would be e.g. ...
- 2,521
1
vote
0
answers
2k
views
Can short circuiting kill a USB cable?
I have a power strip and four things were connected to it. My air filter, laptop, Samsung Galaxy Tab, and Motorola Droid 4.
For the phone and the tablet, there are actually 2 components to the ...
- 397
2
votes
3
answers
15k
views
charging a phone via a laptop which is also being charged
Suppose my laptop and my smartphone are both at low battery level and I want to charge up both. I start charging my laptop, and I also connect the phone to the laptop using the usb cable. Is this ...
- 195
0
votes
3
answers
735
views
Can I charge my nexus 4 with a USB port meant for pendrive in my car using an FM transmitter accessory(it has a USB port for pendrive) [closed]
My point is Nexus 4 needs 2.2 Amp for charging properly however the unrated USB port on FM transmitter will not be providing that much current as it is meant for a pen drive. When I connect it to my ...
- 133
69
votes
5
answers
475k
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 ...
6
votes
2
answers
4k
views
Does it use less power to connect to a tethered phone using USB or wifi or bluetooth?
If you are tethering to the internet through your mobile and your notebook is low on power you may want that connection to use the least possible power for your notebook. A USB connection will charge ...
- 254
3
votes
1
answer
3k
views
Does anyone understand why the G700 mouse charging cable must not be extended?
[Its manual suggests to not use the extension (which is aimed for the receiver) when charging the mouse.]
I wonder why that is.
Here is a photo of it.
You can also find plenty of them on the ...
- 2,596