Thanks for that. will keep an eye out for this, as it seems pretty useful, especially in the evening/night when normally you would connect it to the charger...
FYI, just double-checked it for you. The model number is CR S650. Nobody's announced it yet with a US plug, that I can see. The known part numbers so far are:
UK plug -- Mfr: 99H10722-00, EAN: 4710937372014, SKU: 230289
(Available Sunday 6th May for US$67 on Expansys)
EU plug -- Mfr: 99H10551-00, EAN: 4710937365054, SKU: 229884
(Available Wednesday 18th April for US$67 on Expansys)
Hopefully it'll be released in the US market too, or can be used with a US adapter easily.