Your trusted stabilizer with model number FVR-1000 is a 1kilowatts stabilizer that comes with a sub port that can be used to charge an external device.
See technical specifications below-
Output AC: 220V max.4.5A
Input Voltage: 100V-260V
Frequency: 50Hz
Fuse: 10A
Model: FVR-1000
Phase: Single Phase
Light: LED Display