Hello friends I am Avinash Sharma and today I give you tips about buying a power bank friends first you have to select company this is a must because good company give you good product life you can buy Samsung Power Bank xiaomi Power Bank there are so many company of power banks available in market you can select any one but remember buy a good company and then you have to select how much power you need in your Power Bank like 3300 Tu 10000 m a h at least you by 10000 MH because that give you easily 2 days battery backup and its good also when you’re traveling thank you