On the TP4056 lithium charge management chip The charge light D1 lights up, the charge is complete Indicator D2 The integrated MINI USB head can directly connect the load to the computer's USB port The charge card can also be powered by a pin (IN + and IN-) Reserved TEMP pin head which can be used as a printed circuit board for the lithium battery temperature sensor: 3.73 (cm) x1.5 (cm) /1.46''X0.59 '' Input voltage: maximum output load current 4V-8V: 1000mA
