Collection: TSBar Power Banks & Portable Chargers

When used for phone and laptop charging, these terms usually describe a rechargeable battery that powers compatible devices away from an outlet. Compare the capacity, output ports and charging specifications of the exact model rather than relying on the name. Shop Techsmarter portable chargers.

Start with the devices you want to charge, their charging connections and the time between outlets. Then match the bank's output to those devices and choose enough capacity for your planned use. Select a rugged model for suitable outdoor conditions, a laptop model for compatible USB-C PD charging, or MagBoost for supported magnetic phone charging.

No. Milliamp-hours describe battery capacity at a stated voltage, while watts describe charging power. A larger battery can provide more reserve without increasing charging speed. Compare both capacity and the output available from the port you will use.

The result depends on the phone's battery size, the power bank's usable energy, the charging method and phone use during charging. Conversion losses mean that dividing the bank's mAh rating by the phone's mAh rating can overestimate the result. Our capacity guide explains a more useful comparison.