First and foremost, the power bank must be new. Under no circumstances must you buy an old battery bank. Those old power banks come with their own problems and also a diminished lifespan. Another vital factor to consider is its battery capacity. This is the amount of electric charge it can deliver at the rated voltage. It’s measured in milliAmps per Hour (mAH). It’s important that you buy the highest possible capacity that you can afford. Also before buying a power bank, its important you take time and read reviews from online shopping platforms so that you can know which is favorite from the consumers point of view. Its versatility also comes in handy, as it’s best to buy a power bank with many output ports if you have more than one device you intend to use it for. Also buying a power bank that doesn’t need you to get third party connectors is a plus. Related Post: This battery-free phone is powered by cellular tower and nothing else Price and quality: It’s important that you check out basic quality features like short circuit protection. This can come in handy to prevent the chances of it exploding and hurting you. Also don’t go for very cheap power banks because most times they come as substandard. Choose an affordable but quality product. Portable power banks are the best because it becomes easier for you to carry it around when on the move. Consider also the brand name. Make sure you buy a power bank from a reputable brand. Also take note to buy it from verified and reputable sellers who can offer you warranty and simple after sales services and advice. Value added features can also be a plus when looking out for a battery bank. For example, there are power banks that come with a LED light that can act as a torch in case of abrupt power blackout. Power banks have become a household accessory when on the move. I hope the above information will help you make an informed decision when looking for an ideal power bank.