This MacBook Pro 15" Retina (Late 2013-Mid 2014) replacement battery fix kit includes all the parts, tools and adhesive you need to bring your dead MacBook Pro back to life! 100% factory tested.Tested and guaranteed to have a capacity greater than 8200 mAh.Spot tested by iFixit staff in San Luis Obispo, CA to ensure consistency of quality and capacity.Battery adhesive is preinstalled to improve the quality of your repair. Battery degradation is an inevitable part of your laptop's lifespan, extend it with this new replacement battery compatible with MacBook Pro 15" Retina (Late 2013-Mid 2014). Factory-installed MacBook Pro 15" Retina (Late 2013-Mid 2014) batteries are rated to last 1,000 cycles. If your laptop won't turn on, turns off suddenly, has a "service battery" warning, or simply won't hold a charge, this replacement battery may be what you need to fix it. Our aftermarket replacement batteries lead the industry in quality and reliability, so you know you're getting the best money can buy. Kit Includes:New Replacement Battery compatible with a MacBook Pro 15" Retina (Late 2013/Mid 2014) laptopInstallation AdhesiveiFixit Adhesive RemoverSafety GlassesNitrile Gloves (2)Berkshire PRO Wipe 880SpudgeriFixit Opening TooliFixit Opening Picks (Set of 6)Plastic CardsAngled TweezersPrecision Bit Driver4 mm Precision Bits:Pentalobe P5Torx T5Torx Security TR6 This part is compatible with MacBook Pro 15" Retina A1398 Late 2013 to Mid 2014.