I use such batteries even for emergency back-up charging of mobile phones such as a ... as well as for mobile and computer Arduino projects. A (small) project that I wanted to be fired with this battery "thermometer" (An Arduino Leonardo with DS18B20, a display of 2 NeoPixel LED bars Photoresistor this dim logically) is not in the dimmed LEDs Power Hungry (0.5W) enough for it to operate longer than 10 seconds. However, it is observed a nice effect when you change the parameters. The 3 pixels which are to display the level light up continuously if the power consumption is high enough. Otherwise, they will go out after about 2 seconds. So I increase the power consumption of the LEDs it is possible to operate this thermometer to the battery permanently. The actual project for which I have ordered this battery (a light show for a QuadroCopter [...]), however, seems (at least from the first stage) enough power to consume (1.4-4.8W) so that this battery does not switch off.
By double clicking on the button to turn on and again the integrated flashlight. This produces a bright bluish / white light that should be absolutely sufficient for small objects where you need light. The supplied cable (~ 20cm and 60cm ~) are intended only for loading and accordingly have no data lines.
There is a wrist and a neck loop to I but something usually I can not insets not really write something for quality
