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Topic: Is there a forum area for power sources? (Read 1 time) previous topic - next topic


I first thought of posting a link to this ad in the Latest Purchase thread as "I haven't bought one, but" and then changed my mind.

I only post a link to this ad because in some proto-or-finished projects it should make a nice fit.

Portable Dual USB 12000mAh External Battery Power Bank w/ 8 Charging Adapters - Black
SKU: 184376 (Added on 1/30/2013)
Price: US$21.40


1) http://gammon.com.au/blink  <-- tasking Arduino 1-2-3
2) http://gammon.com.au/serial <-- techniques howto
3) http://gammon.com.au/interrupts
Your sketch can sense ongoing process events in time.
Your sketch can make events to control it over time.


I have one that is 15000mAh, has 2 USB @2A and a DC-Out jack at 9v/12v @2A (selectable).

I find it quite handy even during prototyping.


I find the rated capacity to be ... unlikely.  12000mAh @ 5V is 60Wh, in a 217g package puts it at 276Wh/kg, which is above the range that wikipedia says that Li-ion batteries deliver.

It could still be a useful product, of course.


Apr 04, 2013, 02:38 am Last Edit: Apr 04, 2013, 02:41 am by Osgeld Reason: 1
those are Chinese mAh, so multiply by 0.75


I had one of those, had tested about 7700 to 8000 mAh@5V. The 12000mAh was the battery capacities at 3.7V

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