2 in 1 Charge and Discharger(Boost) UPS modules
 
Input voltage : DC 5V/6V/9V/12V/15V/24V
Output voltage : Equal to the input voltage (Because the input and output ends are isolated by Schottky diodes, there is a voltage difference of 0.2-0.6V)
Output Power : 15W
Full charge Voltage : 4.20V(+-1%)
Power off switching time: 10MS
Operating ambient temperature : -40° to +85°
Storage temperature : -65° to +125°
Size: 60*18*6MM(Suitable for 18650 battery)
Weight :8g

The maximum allowed load power is 15W. The parameters of each version are as follows:
5V Version : Input 5-5.5V,Output 5V/3A
6V Version : Input 6-6.5V,Output 6V/2.6A
9V Version : Input 9-10V,Output 9V/1.7A
12V Version : Input 12-13V,Output 12V/1.3A
15V Version : Input 15-16V,Output 15V/1A
24V Version : Input 24-25V,Output 24V/0.5A

Working Principle:
1 Input port input voltage, output port output voltage (Vout=Vin-0.2~0.6V)
2 If the battery is not fully charged, recharge the battery.
3 If the input port voltage disappears, the battery is discharged, and the voltage is boosted and output from the output port. Applications:
WIFI router network equipment uninterrupted power supply
Uninterrupted power supply for industrial equipment such as PLC/HMI/industrial control host​
Battery powered equipment
LI-ON LI-PO Lithium Battery 18650 14500
UPS power supply equipment diy
Solar charging
Electronic diy kit