Samin is another good brand which one should consider when buying a power bank and the Samin power bank will enable your phone to last much longer. It comes with 10, 000 mAh battery capacity. Samin uses Lithium polymer batter in this power bank.Which is not a stack of cells but like phone batteries. It also supports fast charging and will be able to charge your devices quickly.Its Exceptional quality makes it possible to retain charge for weeks.Must to try product at just~1400 Rs