TOMO P4 USB Smart 4 Charger with Indicator Light for 18650 Li-ion Battery, TOMO P4

1. Two in one (18650 battery charger and intelligent mobile power supply)
2. Each slot has a separate charging circuit.
3. Reverse polarity protection.
4. When input and output are simultaneously, it will automatically charge the device first, then charge the battery.
5. Does not work, automatically turns off after 20 seconds. It automatically turns on after charging, and automatically stops working after the output current is overloaded.
6. Press to turn on/off the backlight for less than one second and turn on/off the machine for two seconds.
7. The maximum output current of 1A USB output is limited to 1.5A, and the maximum output current of 2A USB output is limited to 2.2A.
8. With dual USB output, both devices charge simultaneously. During simultaneous output, the total output current of the two USB ports is 2.2A. If the total output current is greater than 2.2A, the newer USB port will stop working.