You won't get as many smarts with the Roost Smart Battery as you would with a wholesale connected replacement, but at $35, it's a viable and cost-effective option for simple, retrofit smarts.
It looks like a typical handgrip mount for an action cam, but its USB ports let you know it's something more.
Apple's own iPhone 6 and 6S-compatible battery case is compact, comfortable and works with Lightning cables, but other cases exist that cost less and deliver more power.
Logitech's first stab at an iOS game controller nails design and feel, but lacks flexibility or extra features.
If you can live with the Innergie PocketCell's price, you're getting one of the better -- and more versatile -- portable chargers.
A newly discovered method of treating nanowires results in battery technology that can be recharged hundreds of thousands of times.
Bavaria's littlest electric city car ups its capabilities to better compete in an increasingly thick segment.
With a 50 percent boost in effective range, BMW's electric city car is ready to roll to your destination in hushed silence.
It's all part of Volvo's master plan to sell one million electrified cars by 2025.
Need extra power on the go? Carry some around with this week's prize, which can charge three gadgets at once.