WIDE COPATIBILITY: The replacement battery is compatible with JBL PartyBox JBL PartyBox 520 FG2CELL21700 wireless bluetooth speaker.
SPECIFICATIONS: The batterys type: Li-ion; Capacity: 5000mAh/108.0Wh; Voltage:21.6V; Limited Charge Voltage: 25.2V. Condition: Brand new, from high quality materials, top circuit boards and smart chip.
DURABLE& SAFE & RELIABLE: Build-in special microchip to prevent against short-circuiting, over-charging, over-discharging and over-heating, greatly extended the Li-ion battery life.
USEFUL REMINDER: It is recommended to fully drain and fully charge the battery especially during the first 3 charging and discharging cycles, doing so may greatly improve the overall life of the battery.
PRODUCT LIST: 1* Battery. All LIXIEKE products are Certified by CE, FCC for safety. Strict guidelines for compatibility, and standards compliance for environment safety.