Romoss PEA20 Power Bank — 20,000mAh, 30W

Twenty thousand milliamp-hours is roughly four full charges for a typical phone, or one full laptop top-up with enough left over for a phone.

Thirty watts matters more than the capacity for day-to-day use: it is the difference between a power bank that refills your phone in an hour and one that takes most of an afternoon. Three ports means the people around you can share it.

Built-in protection against over-charging, over-discharging and short circuits.

Worth knowing before you fly: at 20,000mAh this sits under the 100Wh airline limit and is allowed in hand luggage on most carriers. Check with your airline.

Cash on Delivery anywhere in Pakistan, and delivery is free on orders over Rs 2,000.