Not that this should need to be done at this stage, but let's do it anyway.
Apple Wireless Keyboard
MC184LL/B
V % Notes
============
3.20 100
3.00 100
2.81 100
2.60 80
2.40 17
2.20 10 *Low bat warning
2.10 5
2.05 0 still fully functional
1.99 0 ceases function
% is the remaining battery life as reported by OSX. OS version 10.9.5.
Test was run with the dreaded, external power supply with voltage monitoring via an Agilent 34461A with a current calibration certificate. Voltage monitored directly at the negative terminal and approximately 12" from the positive terminal using 18 ga stranded wire to ensure minimal voltage drop. Conveniently, the resistance of the wire is 0.22 Ohms, which provides a Thevenin equivalent source. If you really need me to demonstrate the complete range of Thevenin equivalents, PM me. Happy to source some current shunts and oblige.
The maximum current draw was approximately 50mA during these tests. Average current draw during normal operation was about 5mA. That would make the voltage drop at the positive terminal approximately 1mV less during normal operation and about 10mV less during peak draw (device initialization). Neither voltage drop has a substantive impact on the results of these tests.
If you think I'm making this data up, contact me. I will be happy to demonstrate this test, live, in person. You come to me. We'll even drop by the Apple store and buy new devices in shrink wrap, so no one will think I'm gaming these tests somehow. We can have a local university host the trial if you like.
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So, Bob, let's recap:
This is what you're advertising:
![](http://www.batteriser.com/wp-content/uploads/2015/07/how_it_works01.jpg)
![](http://www.batteriser.com/wp-content/uploads/2015/07/how_it_works02.jpg)
![](http://www.batteriser.com/wp-content/uploads/2015/07/how_it_works03.jpg)
![](http://www.batteriser.com/wp-content/uploads/2015/07/how_it_works04.jpg)
Most devices only tap into a fraction of your disposable battery’s energy – about 20%.
Batteriser uses micro-circuitry that lets you instantly tap into the 80% of energy that is usually thrown away.
And that is completely, utterly misleading and wrong. The Apple Wireless Keyboard drops out at 1.025V per cell. At that voltage, the energy remaining in the cell is NOT 80%. It is, in fact, approximately 8%. Your claim is off by an order of magnitude.
Care to start making some retractions, or are you going to wait for me to find a Garmin Dakota?