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I explicitly mentioned 6 pieces, in the title. It could be more, if we would reduce the voltage, the loss would hopefully be less significant.
The procedure with a dead battery seems cool, but I am not a geek to cope with such complicated process. You also have to own lots of hardware for it...
This is not the first time I refer to this device:
**broken link removed**
I really love it, especially the fact that it can transfer very frequently cell's low voltage to common USB voltage, which can charge various devices (with some P consumption, of course, for the driver/transformer, or...
I was also wondering, where he got the half speed from. If the device really produced 5V, it should work on full speed.
Do you know any similar devices that would provide portable supply (from batteries) for USB 5V? If this one might be fake?
So it's completely the same as if charging from the wall?
No damage can occur to the battery / phone electronics?
I consider this power bank:
**broken link removed**
If I buy this portable USB fan:
**broken link removed**
And connect a 5V power bank from 18650 battery:
**broken link removed**
Will it work?
I know it's quite crazy, but the bank states max. discharge 1 A, the fan takes 0.5 A. So with a 3000 mAh battery, could it even last for 6 hours?
Thanks
Could I ask?
Is this process identical to charging? IE standard charging is the same as "instead supplying 5V power to a cell phone and the charger circuit inside the cell phone charges the 3.7V battery inside the cell phone"?
Or those two are not identical, and the second (supplying 5V from...
I do not understand 'worn out' completely. So once they really used to be 6000 mAh, but they have gone through so many cycles that now they have only less than 2500 mAh?
This is very important research. So I should expect about 50 % ... 10 % of the advertised capacity only? And when it's under 30 %, you get a refund automatically, is there any law on this?
"people nerver measure the battery capacity, they simply don't have the instrument for that"
could you...
The tests of "moder Lithium battery" would not help either; I doubt they would test these UltraFire "garbage".
In my country, they sell a $18 Panasonic battery, which really looks like an original. But they claim there is ABSOLUTELY NO protection circuit. I conclude these are fake as well, in...
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