ToughTested ROC 16 ZDNET's key takeaways The ToughTested ROC 16 is on sale now for $85.
It's a rugged, 16,000 mAh power bank with three ports, wireless charging, and a solar panel that could come in handy in an emergency.
The solar panel has natural limitations. $89.99 at Amazon
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During peak sunlight, the Earth can receive as much as 100 watts per square foot at the top of the atmosphere. However, factors like clouds and rain (which I have plenty of experience with living in the UK), and the angle of the sun over the horizon reduce this amount.
Also: I tested a solid-state power bank that's seriously durable, but two things hold me back
And it's all free, just waiting to be harvested. So, it makes sense that we'd eventually start using it to power our homes and gadgets. Over the past couple of decades, I've watched solar panel technology improve in efficiency to the point where even relatively small panels can deliver a meaningful amount of energy.
Small enough, in fact, that you can now add a solar panel to a power bank, and it's not just a gimmick.
This is exactly what ToughTested has done with its range of power banks. Here, I'm looking at a pack from the ROC series, consisting of high-end power banks with built-in solar panels.
Before we dive in, let me make one thing crystal clear: this isn't the first solar-powered power bank I've tested -- but it is the best. By far. Most of the ones I've tried in the past have been downright terrible, some even came with fake solar panels (yes, really) or solar panels that would actually drain the battery when out of the light. The others were mediocre, with the solar panel serving as little more than a gimmick to lure in buyers.
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