I bought this from flipkart 10 days ago.Mine was thw like new device.Mine was a black variant from flipkart and was like brand new product with no scratch.
Now comming to the charging I would say that it has two charging ports.One is micro usb another one is type c.Both takes about 5-6 hours to get fully charged.The led light blinks while charging.There is a buttion just under the led light which you can press to get the led indication of the battery before going anywhere.The design is seamless as there is no button on the metal framework giving it a good grip.The powerbank is though very fat but is very less broad letting it to hold in one hand.I have seen other 20000 mah powerbanks which cannot be gripped from one hand.Now the weight management is okay and cannot be complained much because of the metal build which is a usp of the device and makes it better than other powerbanks at the same price range.Also there is no heating issue despite of many charges and discharges till now.But cannot say in long run.Many say that there is no led indiactor for fast charging but there is a green led indicator thay you can see from USB port!!through which you can know that fast charging is proceeding.
Coming to the capacity it charges my galaxy m30s about 3.5-4 times.It takes about 1 hour 40 min to charge my 6000 mah battery full from 2%.again fast charging cannot be done with the default micro usb cable included.Use the cable provided by your smartphone for fast charging.
Overall good and value for money if you get it for a price like 800-900.