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Powerbank with two different current outlets
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Flexbex:
Many powerbank come with two different outlets. Like 1.0A and 2.1A. what's the reason behind it? By USB standard shouldn't it limited anyway by charging and charged device?
amyk:
That's presumably what the data lines advertise... which in cheaper units might not actually be what the output is capable of delivering.
Flexbex:
Yeah but I wonder why they often have two outlets with different max amps? Is the 1amp more efficient? If it would be just for advertisement it would be advertised as having two outlets with both having max 2amps.
wraper:

--- Quote from: Flexbex on January 01, 2022, 08:59:45 am ---Yeah but I wonder why they often have two outlets with different max amps? Is the 1amp more efficient? If it would be just for advertisement it would be advertised as having two outlets with both having max 2amps.

--- End quote ---
Then it would need to be capable of supplying 4A total.
Zero999:

--- Quote from: wraper on January 01, 2022, 09:16:53 am ---
--- Quote from: Flexbex on January 01, 2022, 08:59:45 am ---Yeah but I wonder why they often have two outlets with different max amps? Is the 1amp more efficient? If it would be just for advertisement it would be advertised as having two outlets with both having max 2amps.

--- End quote ---
Then it would need to be capable of supplying 4A total.

--- End quote ---
Not necessarily. If each socket were rated to 2A, there would be no guarantee it's rated for 4A. It might be rated for 2A total.

--- Quote from: Flexbex on January 01, 2022, 07:39:42 am ---Many powerbank come with two different outlets. Like 1.0A and 2.1A. what's the reason behind it? By USB standard shouldn't it limited anyway by charging and charged device?

--- End quote ---
I suspect it's an error. Does it say, which socket is which?
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