Build quality of frame = okay
Chagring = Very Poor ( from existing 30% to 34% ) it takes 30 minutes forget about fully charged.
Battery attached framed to case quality = poor
Overall 2800 Rs pure waste of money being we are in year 2024 , where technological advances are so great yet this product is 10 year old way of working
DO NOT BUY SAMSUNG ULTRA 23 BACKUP BATTERY CASE AT ALL.