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I suspect that we're moving towards "one charger fits all" in that cameras, phones, etc are moving towards charging from USB sockets. In collaboration, you can now get car cigarette lighter to USB adaptors, (plus many modern cars have USB sockets anyway) mains to USB adaptors, so I suspect that, apart from devices which need more current than USB is specified to supply, we're headed that way anyway. But I do agree that the connector at the phone/camera/whatever end should be standardized.