The remaining time is only an estimate based on recent usage. My 2008 MBP - which only realistically gets about 1:30 per charge - often shows only ~1 hour (& 95% battery) left once it's finished booting but that then increases to sometimes as much as 2 hours depending on what I'm doing. Apple offers a battery replacement service for all MacBook, MacBook Air, and MacBook Pro notebooks with built-in batteries. The one-year warranty includes replacement coverage for a defective battery. ![]() No HDD or battery. What they don't say is which "25 popular websites"Īlso, your battery life can increase during use. A1278 A1322 Battery, POWERWOO MacBook pro Battery Replacement 13 inch Mid 2012 2010 2009 Early 2011 Late 2011, a1278 Battery with 6000mAh 10.95V 65. Your battery is designed to retain up to 80 of its original capacity at 1000 complete charge cycles. Remaindered Macbook Pro 13.3-inch, Early 2011 for parts A12. Battery life varies by use and configuration. The wireless web test measures battery life by wirelessly browsing 25 popular websites with display brightness set to 50%. Wireless web testing conducted by Apple in October 2011 using preproduction 2.8GHz dual-core Intel Core i7–based 13-inch MacBook Pro units, preproduction 2.4GHz quad-core Intel Core i7–based 15-inch MacBook Pro units, and preproduction 2.4GHz quad-core Intel Core i7–based 17-inch MacBook Pro units. Battery and power 7 up to 7 hrs wireless web Built-in 63. ![]() ![]() This is how Apple tests to get their battery life figures (it's a footnote on the product page):
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