CONNECTOR IN THE LEFT
DIRECTION FROM LEFT TO RIGHT
P- NTC P+
(NEGATIVE)(NEGATIVE TEMPERATURE COEFFICIENT/BATTERY TEMPERATURE)(POSITIVE)
Positive to NTC around 870 Ohm in room temperature 25 deg C.
You can increase resistor value if overheat warning kick in
(red light flashing or flashing orange-yellow / yellow-green at led power status)
2000 mAh 3.7 Volt