NewerTech NuPower 77.5 Watt-Hour Battery for MacBook Pro 15-inch Unibody: Amazon.co.uk: Computers & Accessories
Newer Technology® : News Room : Press Article : Review of NewerTech NuPower Battery for all MacBook Pro 17-inch non-Unibody by Tomas Ratas, from TestFreaks
NewerTech® : Batteries : NuPower® Batteries for MacBook® 13-inch Black non-Unibody
Battery Replacement Kit for 13-inch MacBook Pro (2016 - 2017)
NewerTech NuPower Battery for MacBook 13", Late NWTBAP13MBU50RS