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Electrical Engineering

Questions tagged [powerbanks]

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75 questions
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0 votes
1 answer
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This is the first circuit I have ever designed. The circuit is altered from the 'Typical Application' of the IP5310 datasheet to allow the type-C port behave as both Input and Output. I plan on PCB ...
INFINIYOS KD's user avatar
  • 19
4 votes
2 answers
612 views

I have recently bought an Atorch UD18 USB current tester. I would like to determine the Wh and mAh capacities of a power bank. Of the two, I prefer Wh, but the reality is that mAh is used more ...
Andrew's user avatar
  • 141
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1 answer
100 views

I'm doing a review of this power bank: https://www.amazon.com/dp/B0DLNT1YCV It measures about 27mm x 67mm x 102mm, which is much smaller than another 20,000mAh bank I have. I charged a Galaxy S23 ...
Andrew's user avatar
  • 141
0 votes
0 answers
92 views

I'm using a powerbank to power a Raspberry Pi and small screen. I'd like the Raspberry Pi to detect when the powerbank battery is low: to prevent the system to prematurely shut off to give visual ...
Salah's user avatar
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1 vote
0 answers
99 views

I have a lamp with a power cord that includes a ground connection. I have a mains voltage power bank that obviously doesn't supply ground. Why should I not rig up a cable that connects the lamp to the ...
Nobody's user avatar
  • 181
0 votes
1 answer
179 views

I'm experimenting with various "power bank" modules: https://a.aliexpress.com/_EypXQkN https://a.aliexpress.com/_EvgbXp3 https://a.aliexpress.com/_EIQPLzL They all are based on either ...
Akint's user avatar
  • 1
1 vote
0 answers
126 views

I builtd and LED light panel that uses LED strips. Currently using 2 wire USB cable to power it via Powerbank. Currently you need to turn the powerbank on and then it provides power to the LED when ...
j d's user avatar
  • 21
0 votes
1 answer
79 views

I am building a power bank consisting of "12" 18650 cells arranged as 3 set of 4 in parallel and then putting the 3 sets in series to achieve 12.6 V more or less. My questions are: do I ...
Tom Swango's user avatar
  • 11
0 votes
1 answer
98 views

I'm looking to supply a small Freescale board (no battery or charger chip) with uninterrupted power. This is its native adapter (5V, 2A): This is the power bank. Passthrough charging works. When I ...
kontextify's user avatar
  • 103
16 votes
3 answers
3k views

Any 100W USB PD 3.0 system must support 20V/5A charging. Naively I assumed that therefore they should support 5A at any of the lower voltage rails! But for some unclear reason, I cannot find any PD ...
Rafael's user avatar
  • 271
1 vote
1 answer
71 views

A noobie here. I'm making a powerbank for my ebike. The ebike that I have has a power supply that outputs 42 V 3 A. I'm trying to mimic that with my power bank so that I can plug the powerbank into ...
O M's user avatar
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70 views

I know that batteries can't be connected in parallel even though they are the same type (eg. Li-ion) if they have different capacities. I have several of those and want to use them to make a desk ...
Ömer GÜZEL's user avatar
  • 101
8 votes
2 answers
1k views

I do have a bunch of 18650 LiPo cells, salvaged from various sources. Now, I happened to come across a variety of power bank cases on Amazon which mostly look like this: Even a cursory look tells me ...
Florian Echtler's user avatar
  • 309
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1 answer
109 views

I have an old power bank with swollen battery with the specs you can see in image 1 This is the module, but I can't find any specs nor schematics on the internet. The image below will show the full ...
Johan's user avatar
  • 9
0 votes
1 answer
282 views

I've got only a basing electronic background and I'm more experienced in programming :) I'm going to use some power bank (PB) device with USB connectors to provide power to my embedded system. I ...
user2699113's user avatar
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