All portable power banks are NOT equal! The true capacity might SHOCK you!
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- Опубликовано: 20 сен 2024
- I've had a few portable phone charging banks for a while, but I never actually tested the capacity to see if I really got what I paid for. Here are results of just a couple. All I want to say is.... Always pay a little more for name brand....
List of the Items in this Video:
Electronic Load Tester, USB Load Tester 150W 200V 20A Adjustable Constant Current Electronic Load Battery Capacity Tester Module Power Meter, Intelligent Discharge Resistance Power Tester
amzn.to/4b8fFGa
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#powerbank #truth #capacity
Unfortunately I’m learning this the hard way 😢
You can't get good at anything without failing.
Me too. I really never thought about it because I would always use the device while it was plugged into the bank. Results were surprising. Thanks for the comment.
Just got the Anker.
Love it
Good to hear! Thanks for the comment.
There is a power loss in the DC-DC switcher which converts the 3.7v to 5v, so that last powerbank is probably closer to when it was new. Assuming 10% loss in the switcher, then the original powerbank capacity is probably nearer 67w, so its about 90% of original. Regarding those little USB cables.. they look as though they are fuse wire internally..
Thanks for the information and the comment.
I tend to buy Anker power banks myself, that said I am having to send one back as it does not report the state of charge correctly. Not bad out of 12 unit in all.
Anker is the way to go! Thanks for the comment.
I’ve had several with solar charging built in and only one worked even a little bit. That one will go from 50% to 100% charge in direct sunlight in 8 hours.
Thanks for the info and the comment.
'You get what you pay for' springs to mind 😂. I've purchased cheaper power banks, only to find that they pack up working fairly quickly. I've got a power bank that is still going strong, and it's over 5 years old......think it's an Anker one.
Everyone is saying Anker is the way to go. Thanks for the comment.
So like a year ago, I was considering building a big USB power bank out of 18650 cells. The confusing part was trying to decide if I was going to make it 4s or just parallel them all.
Going from 3.7v to 5v seems like it would be more efficient than then dropping from a roughly 12v configuration. But then it seems like charging and discharging would be very inefficient and slow at 3.7.
It seems like it would be inefficient within the battery vs the conversion to USB maybe being more efficient.
Anyways, just rambling now haha I’ve never seen actual tests to verify the advantages and disadvantages.
Thanks for sharing and the comment!
wow thks
You're welcome. Thanks for the comment.
I've had a couple smaller ones for years, even took them to Europe with me. They have their limitations and definitely should be used with the understanding that there will be degradation, all the claims are over estimates, and you might have to buy a few until you find one that fits your needs. That's how I ended up with a little baggie full of multiples. combined they would all charge my phone from dead to 100% twice. Hopefully id be able to get to a car or mains electricity to recharge them by the time they're all drained.
Thanks for the info and the comment.
how would these compare in charging with something like a 12 v 7ah lead acid battery? I am playing with solar with some 12v solar, the abover mentioned lead acid, and some cheap ac inverters.
They would be more portable. They also are really only for charging phones and tablets.
What is the device that you were using to drain the wattage?
Hit the '...more' link all his equipment are listed with links.
Electronic Load Tester, USB Load Tester 150W 200V 20A Adjustable Constant Current Electronic Load Battery Capacity Tester Module Power Meter, Intelligent Discharge Resistance Power Tester
amzn.to/4b8fFGa
All of these Chinese power banks usually put out only half their advertised capacity when we tested them. Typical BS advertising crap from our friends across the pond.
Exactly. Thanks for the info and the comment.