The Newell SUN-INTE-103, 2INR19/66-2 is a replacement for the battery you’ll find in the JBL Xtreme 2 portable speaker. It has a capacity of 5200 mAh, which will give you many hours with your favourite music after each charge of the device.
All you will need to replace the battery is a screwdriver and a tutorial, which you are sure to find on YouTube. The cell offers a high level of performance. For the sake of safety of use, the manufacturer has also taken care of a number of safety features.