I found this on eBay: http://www.ebay.com/itm/Original-NE...ultDomain_0&hash=item2a1952bb1a#ht_1058wt_803 The stock battery for an 11" MBA is 35WH. Obviously the number of charge cycles might differ, but the capacity and price are tempting. Anyone try this? UPDATE: Upon closer inspection, it has a different shape than the other 11" battery packs. Looks like a battery for a 13". Anyone find a higher capacity battery back for the 11"?