iFixit have their hands teardown the new iPhone 6s Smart Battery Case from Apple. The Smart Battery Case is use to double up the power for iPhone 6s. It is surprise Apple jump into having their own extended battery product for the iPhone. It is also surprise many Apple fans with their new uncommon design.
iFixit discover the Smart Battery Case is being powered by 1877 mAh at 3.8 V battery which have the capacity of 7.13 Whr. There is also a logic board inside the case which make the Smart Battery Case smarter than other power bank . It cost $99 and from the tear down process, it seems impossible to repair or swap the battery inside the case.