Ticket #5965 (closed defect: wontfix)
Hand Crank can only charge the laptop 21 times
|Reported by:||arjs||Owned by:||wad|
|Keywords:||crank, freeplay, charging||Cc:||walter, arjs, vmb@…|
|Action Needed:||never set||Verified:||no|
|Deployments affected:||Blocked By:|
(With reference to the the green hand crank) On the page http://wiki.laptop.org/go/Product_News
there is a link to the Freeplay Hand crank spec sheet http://wiki.laptop.org/go/Image:OLPC_clamp_charger_detailed_spec.doc
Page 1 of the spec sheet (under the section of Benefits) mentions that the Crank can work upto 500,000 revolutions.
Cranking at the rated rpm(130rom), it means that it can do 500000/130 = 3846 minutes = 64 hours.
One session of cranking takes about 3 hours, which means that the laptop can only be charged 64/3 = 21 times.