Wireless chargers use a big coil to create the field that actually charges your device, which is why placing your phone in just the right spot is usually necessary. Some chargers use multiple coils to increase the working area of the charger, but the new Zens Liberty sports a ridiculous 16-coil configuration that can charge up to two devices at once in any position, with up to 15W of output each. The company is even taking that level of overkill just a little bit further by offering a special edition model with a glass top so you can see all 16 coils.

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