Belkin’s camera grip power bank is a few upgrades away from being a must-have

Belkin's Stage PowerGrip has shown me that I should be asking more from a wireless magnetic power bank than just boosting battery life while it hangs off the back of my phone. Its clever design adds layers of extra functionality, and the inclusion of a retractable two-way charging cable expands the number of devices you can charge without always having to remember to pack a cord. It also improves your smartphone's ergonomics when taking photos, but that's one of a few places where the PowerGrip's functionality feels disappointingly limited.