The schematics show a 3.3 kOhm pull-up resistor on the “POL” signal of the LTC4150.
Looking at the datasheet, this signal is high when the battery is charging (current flowing from out to in) but when you discharge the battery (i.e. normal use), this signal is low.
3.7V / 3.3 kOhm = 1.12 mA
The POL signal is like that little lamp telling you your battery is almost empty and now is draining even faster 
Red box, steel ty-raps … some people just can’t keep their hands of other people’s stuff.
We has a big orange flash light (one of these old style rotating mirrors with a lamp) outdoors. Next to the door to the basement attached to the CO gas alarm. Someone just unscrewed the thing and took it home …