Apple has confirmed it is replacing a battery pack on its iPhone 5s.
The battery, a 1.5-millimeter aluminum, was part of the iPhone 5 and 6 batteries.
Apple’s online store was the first to announce the change on Monday.
The company says the replacement battery will be made by a company in Germany, which was previously known as Lithium Corporation.
The original battery was a 2.7-millimeters aluminum and had a lifespan of 1,000 to 1,500 hours.
Apple says the new battery will last longer than 1,200 hours.
Apple says that the replacement lithium battery has a lower resistance, so it’s better suited for charging and maintaining a smartphone.
AppleInsider first reported the battery replacement on Twitter.