New Apple software fixes a battery issue found in CR tests. The software, now in beta, will be part of a broad update soon. Consumer Reports has now finished retesting the battery life on Apple's new MacBook Pro laptops, and our results show that a software update released by Apple on January 9 fixed problems we’d encountered in earlier testing. With the updated software, the three MacBook Pros in our labs all performed well, with one model running 18.75 hours on a charge. We tested each model multiple times using the new software, following the same protocol we apply to...