The JBL Battery 200 is a replacement lithium-ion battery designed specifically for the JBL Partybox Club 120 and Partybox Encore 2 speakers. This set includes both the battery and the Charging Case 200, which allows you to keep a spare power source ready for extended events. With a capacity of 4722 mAh, a single battery provides up to 12 hours of playtime, ensuring your music continues without interruption. Its compact black design is lightweight at 0.34 kg and measures 10.3 cm in width, making it easy to transport. The charging case features a versatile USB-C input that supports various power levels, including 20V at 1.5A, and a USB-C output pin to charge other devices, effectively acting as a power bank. This makes it a practical choice for those who host frequent gatherings where power outlets are not always accessible.