Apple Magazine - - Summary -

Bat­tery life is al­ways an im­por­tant con­sid­er­a­tion when buy­ing a new com­puter, and the new MacBook Air does not dis­ap­point. The ma­chine fea­tures a 50.3 watt-hour lithium poly­mer bat­tery and, ac­cord­ing to Ap­ple’s test­ing, of­fers up to 12 hours of bat­tery life whilst brows­ing the web, and up to 13 hours when watch­ing iTunes movies. What’s more, the bat­tery has up to 30 days of standby time, mean­ing you can go for days with­out charg­ing and get the same power and per­for­mance as you would have had your Mac just been charged. Per­haps the most sur­pris­ing thing about the new MacBook Air bat­tery is that it per­forms bet­ter than all other Mac bat­ter­ies, in­clud­ing the lat­est ad­di­tions to the MacBook and MacBook Pro lineup.

On its prod­uct page, Ap­ple says the new MacBook Air had a wire­less web test, which “mea­sures bat­tery life by wire­lessly brows­ing 25 pop­u­lar sites with dis­play bright­ness set to 12 clicks from bot­tom or 75%,” and stressed that “bat­tery life varies by use and con­fig­u­ra­tion.” Bat­tery per­for­mance rarely lives up to ad­ver­tised fig­ures, but even if the de­vice of­fers ten hours of con­tin­u­ous per­for­mance with­out charge, the Air will per­form well against other lap­tops and of­fer enough juice for most con­sumers’ needs.

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