Here are 3 selected power banks you can buy in your budget in April 2019
1.MI 20000mAh 2i
Xiaomi is providing this power bank with 20000mAh capacity which features fast charging. It slows down charging when more than one device is plugged but is faster than the normal charger. Its battery is of Lithium-Polymer. It comes with 6 months warranty.
2. MI 10000 mAh 2i
Xiaomi is one of the best manufacturers available in the market. Dual USB Outputs are provided with quick charging enabled. This gadget looks premium having made with Aluminum Alloy with CNC machine edges. It comes with 6 months warranty.
3. Syska Port 100