MINI PORTABLE UPS TO PROVIDE POWER BACKUP TO DEVICES SUCH AS WIFI ROUTER, NETWORKING DEVICES, CCTV CAMERA, SECURITY SYSTEMS AND RELATED DEVICES MOSTLY OPERATING AT 12, 9 AND/ OR 5 VOLT DC WITH SAFE PEAK VOLTAGE CLAMPING, NEAR ASYMPTOTIC CURRENT LIMITING CHARGING PROFILE ALGORITHM FOR IRREGULAR AND UNPREDICTABLE POWER BLACKOUTS USING ANY LI-ION BACKUP STORAGE CELLS.