Technical characteristic:

40mV/A change at 5V power supply.

Tested the sensor at 3.3V as power supply. This changes the scale accordingly to around 26mV/A.

Technical description:

Sensor outputs the middle (2.53V) of the supply voltage (5.06V) when no current runs. For every Ampere in “positive” direction 0.04V is added to the output voltage. Vice verse in “negative” direction.

Video description:

Charger starts at 0.8 A, then changes to 3.8 A charge, then to tickle charge as the battery already is full.
Equipment for measuring is probably not the most precise.
Basically does the sensor as expected.