[Zeasun Universal Smart Battery Charger ]:
Output: DC 4.2V–500mA*2
Cut-off Voltage:4.2V 0.05V
Measurement: 3.9x 1.9 x 0.78 in / 10x 5 x 2 cm(L*W*H)
Capable of Charging 2 Different Types Batteries Simultaneously:
Automatically Detects Battery Status and Selects The Appropriate Voltage and Charge Mode.
Automatically Stops Charging When Complete.
Excellent Features of Heat Dispersion and Reverse Polarity Protection. Protect Opposite Connection and Short Circuit.