Very new Prodigy user .. What is this ?? 1 x PCB Protected 18650 Batt (Rated: 3.7v - 2200mAh)
* To be used with Prodigy 3.7v Version (Switch without resistor)
The prodigy originally came at 5v, 2 3.0v
batteries with a resistor making it 5 volts.
Another iteration of the prodigy offered a switch without a resistor, so you can either use 2 3.0v
batteries with it, and get 6 v power, or use 1 3.7v battery with it, and get 3.7v power. Its up to you which one you get. Most have the switch with resistor, and use 2 3v
batteries to give their prodigy 5v output.
Hope this helps.
Gibby