All Questions
Tagged with usb-c battery-charging
27
questions
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answers
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USB-C module configuration pins in parallel connection
I have received a lot of help from several members of this site. After trying to wire two charging ports on the same device and investigating the diode OR-ing configurations and the power mux ...
- 145
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1
answer
51
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Question about DC pin in USB C module. Is it possible to connect two USB C and Micro USB connectors in parallel to charge the same battery?
Good morning everyone,
I received help from several members of this page regarding my goal of adding a USB-C connector to a tablet that already has a micro USB connector for charging. After ...
- 145
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vote
2
answers
144
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Device is not charging (how to test ic)?
I have this USB-C rechargable vacuum cleaner. But 2 months after I replaced the battery for a bigger one (from 1500 to 3000 mah 18650) it is not charging anymore, it used to charge with the latter ...
- 69
1
vote
4
answers
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Why USB-C plug doesn’t charge? [closed]
I have multiple USB-C 5V chargers of the same type that do not charge connected android devices. Devices detect charging if these are turned off, but when turned on, no charging icon of any visual ...
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votes
1
answer
54
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Are the data pins necessary on a mini USB connector used only for charging a tablet? Is the ID pin used for OTG?
I have an older tablet, and I plan to replace the charging-only micro USB connector (which does not transmit data) with a USB-C connector. However, upon examining the pinout, I noticed that the two ...
- 145
1
vote
1
answer
57
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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 ...
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votes
1
answer
64
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I tried charging my earbuds with OTG on a USB type A to A cable. But it got damaged. Why? [closed]
I have a USB type A to A cable. I connected an OTG (type A to C) on one end and an adapter on the other end. I then tried charging my earbuds case with it. The case got really hot while charging and ...
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83
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IC to detect when connected to DCP vs SDP/BQ24392 Wiring Help
I'm designing a device using the MCP73871-2CC, which I would like to be able to vary its charge rate via the SEL pin. For this purpose, I think that an IC would be needed that could detect the ...
1
vote
1
answer
119
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Laptop charger (USB-C) kaputt, repair, substitute or buy new? [closed]
My laptop charging cable has a presumablyl slack joint and doesn't charge anymore. (It previously charged when you maneuvered the cable into a certain direction).
I'm now contemplating these three ...
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2
votes
1
answer
247
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Using battery bank as a continuous battery backup / supply for USB devices
I have a Raspberry Pi and mega-4 powered USB hub working well, with one USB-C power input each.
The battery bank has 2 USB ports, one for each device.
The charger (bottom left) is a standard buck ...
- 133
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193
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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 ...
0
votes
1
answer
83
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Is it dangerous to charge laptop from car batterry? [closed]
Can we use a laptop charging adapter without a car? Is it dangerous?
Example: 12v car battery -> automobile auxiliary power outlet(car cigarette lighter) -> car adapter DC-DC with PD 12v to 20v -...
0
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0
answers
151
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ESP32 with Li-po PCB review request
I'm making a calculator based on the ESP32 and this is my second iteration of the PCB.
It's using a CH340C for USB to serial, and a TP4056, a DS01, and a SDB628 for battery charging/protection/...
7
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6
answers
4k
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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
2
votes
1
answer
594
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USB-C QC3.0/PD charging circuit for a portable device
(Maybe) trivial question for sophisticated electronics engineer but hard one for a newbie in Li-Po battery charging design.
My portable device is planned to have Li-Po battery and USB type-C port for ...
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