All Questions
16
questions
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 ...
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
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
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
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
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
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
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
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
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