Number of batteries 1 Nonstandard Battery batteries required. (included) Brand METACUCU Battery cell composition Lithium Ion Battery capacity 10000 Model name SG21700 About this item Perfectly compatible: The Metacucu battery is perfectly compatible with the PartyBox Stage 320 and Xtreme 4 speakers. With a strong 74 Wh power and 10000 mAh capacity, the battery ensures hours of music enjoyment - ideal for outdoor parties or travel. 【Speaker Battery】Rated Capacity: 10000mAh; Rated Power: 74Wh; Rated Voltage: 7.4V; Input: 5V/3A. High performance battery ensures longer playing time. Easy to install: This battery can be easily installed in PartyBox Stage 320 and Xtreme 4 speakers. No special tools or techniques are required to quickly restore power to your device. Compact design: the small and lightweight battery can be easily transported in your handbag, briefcase, luggage or camera bag. Safety: the replacement batteries are fully protected against overcharging, short circuit, electric shock, over-discharge, over-temperature, over-current and over-voltage. › See more product details