Power Bank Xiaomi Redmi Fast Charge Power Bank 20000 mAh (PB200LZM) Black. The reason for sale is that I bought it to charge the batteries of a quadcopter. The quadcopter is no longer around, and such a high-capacity power bank is not needed for charging a phone. I bought it at Zoommer store, the receipt was not kept. Now this power bank costs about 80 lari, I am selling it for 50 lari.