The purpose of the test is to verify that the BittleX battery is providing the correct voltage to power the BittleX robot.
Equipment:
BittleX battery with USB connector
Multi-meter with probes
breadboard
2 male-male 18 or 22 guage wires, one red, one black
Recharge the battery
Make sure the battery is fully charged
Connect the battery to a USB power connection. The battery light should come on.
When the light turns green the battery is fully charged.
Disconnect the USB cable from the battery
Connect the battery to the breadboard
Turn the battery off by pressing the battery button until the light is off
Insert one end of the red wire into the battery connector connected to the red wire of the battery.
Insert the other end of the red into the breadboard positive rail colored red and marked '+'.
Insert one end of the black wire into the battery connector connected to the black wire of the battery.
Insert the other end of the black wire into the breadboard ground rail colored blue (or black) and marked '-'.
Follow the user manual for the multimetter to connect the probes to the multimeter.
Remove any protective cover to the probe ends.
Turn the multimeter on and follow the user manual to set to measure DC voltage.
Press the battery button so the blue light is on.
Insert the Probe for ground (should be black color) into one of the breadboard ground rail holes of the rail that has the battery black wire.
Insert the Probe for positive voltage (should be red color) into one of the breadboard positive rail holes of the rail that has the battery red wire.
Read the voltage from the meter. Here it's 8.29 v
If everything goes well, the meter should read about 8.3 volts.
Common electronics voltages are 3.3 and 5 volts. So 8.3v doesn't seem to be a coincidence.
Turn the battery off by pressing the battery button until the light is off
The 8.3V comes from two Li-ion batteries connected in series.
A single Li-ion battery is 3.7V, but can reach 4.2V when fully charged.
So 8.3V is about 4.15 x 2.