Slashdot Mirror
Man Has Nokia Phone Embedded In False Limb
judgecorp writes "A British man born with one arm has a Nokia phone dock embedded in his prosthetic limb. Apparently, Apple refused to have an iPhone suitably customized for the job. From the article: 'Mr Prideaux, of Wedmore, Somerset, said: "I think this is the first time this has ever been done in the world - and it is brilliant. I can now take calls and make texts just by using my one hand, while the phone sits inside my arm. The phone slots smoothly and securely within my limb and is easily removable, when required. I think this would help a lot of people with prosthetic arms - especially those who were not born with the disability. People who have had motorbike crashes and soldiers who have lost limbs - they could all benefit from this."'"
Fat diabetics lose toes. Skinny emphysematous chain-smokers lose legs. Missing arms are almost always congenital or traumatic.
Apparently the roughly approximate arm of a roughly approximate man would run in the 3.5-6.5 kg range.
If, in the spirit of wild-ass guessing and general laziness, we assume that your amputee-at-the-elbow loses half their arm mass and needs some, but not a whole lot, of headroom for purely structural replacement, you are still looking at 1.5-3ish kg of battery. A good Li-ion or Li-polymer will give you ~200Wh/kg, so 300-600Wh.
By comparison, the Nokia BL-5K battery in the C7 is a 3.7v, 1.2Ah unit: ~4.5Wh. An arm-battery would be somewhere between 65 and 130 times the capacity...