Seriously though, hows a few kHz going to get used by the phone to
> charge the batts when such a function is not designed into the phone?
The 'receiver' function does have to be integrated into the phone:
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"Splashpower is based on inductive power transfer. Our patent pending innovations enable us to overcome previously unresolved challenges and deliver a safe, convenient, efficient and low-cost solution with all the benefits that inductive power has to offer."
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to how it works, see their published patent applications. A simple search on applicant "splashpower" at
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turns up five UK applications. GB2388715 seems to be the main one. The principle appears to be straightforward transformer coupling, using a flat amorphous metal alloy 'core'. An operating frequency of 40 kHz is mentioned.