All Questions
10
questions
1
vote
1
answer
57
views
Charging USB-C PD supported laptop from battery bank
Is there a way that I can change my USB-C PD supported laptop with battery bank? I have 3.7V 25000 mAH batteries bank. 5X (3.7V, 5000 mAH) batteries are connected in parallel. What sort of circuit ...
0
votes
0
answers
57
views
2-S or 3-S USB type-c PD LiPo battery charger
I am trying to implement a 2-S or 3-S USB type-c Power Delivery (USB-C PD) battery charger.
I am using this video of reference which uses a 16pin female usb type-c connector (part: TYPE-C-31-M-12) and ...
- 441
0
votes
2
answers
211
views
Checking voltage of battery with a USB connector
I soldered two wires on female USB type A pins,one wire to ground and the other to the VCC pin.
I was trying to check the battery voltage of the li-ion battery in my flashlight,
I connected the a ...
- 299
0
votes
0
answers
193
views
Battery mangement IC with USB C 2.0
I am currently designing a one-cell battery USB C 2.0 device. I saw many battery chargers from Texas Instruments such as bq24295, bq25628, bq25898, bq25890/2, bq25601, etc.
I would like to use and ...
1
vote
1
answer
201
views
Automatic Power Switching (USB-C and AA batteries )
I am trying to use a P-Channel MOSFET to automatically switch from battery power (4xAA) to USB-C power (5V) when the USB-C cable is connected. I am using a resistor network (R1 and R2) to create a ...
7
votes
6
answers
4k
views
How come modern electronic devices support charging with various voltages through USB-C?
According to this blog post which tested charging a Samsung laptop through the USB-C port with multiple types of USB-C adapters and external batteries, it seems that that laptop can be charged with 5V,...
- 369
0
votes
0
answers
86
views
Load share across 3 USB-C PD connections
I have 3, 20V 100W USB-C PD power supplies, which are basically a USB-C power bank connected to 3 of these USB-C triggers. I would like to spread the load of my project out among all 3 power supplies, ...
- 155
1
vote
0
answers
55
views
Taking more than 2.1A from a two-port "2X 5V / 2.1 A" USB powerbank? [duplicate]
I just bought a powerbank for intending of using it to power a Rasberry Pi4b
But, it seems i did not do enough research regarding the requirements of the Pi model i have.
The powerbank is listed as &...
- 143
0
votes
2
answers
174
views
USB-C laptop charger / circuit breaker device
Is it theoretically possible to build a device that connects to a laptop via USB-C, receives battery level information and connects laptop to a charger only if the battery level is in certain range?
I ...
- 101
0
votes
2
answers
430
views
Battery charging over USB-C (using USB-PD?)
I'm designing my first PCB, a wireless Keypad/Macropad with a battery. I'm probably going to be using a 2Ah Li-Ion battery because there will be a lot of LEDs on it and I just want it to last longer ...
- 23