Larger Capacity Battery: High-capacity 3500mAh mobile printer battery replacement that can fulfill your work demands and provide full circulation functionality
Stable Safety Protection: This ZQ520 ZQ620 battery tested to strict quality control standards to prevent overcharging, overheating, and other defects
Easy to Install: Plug and play, simple to remove the battery, and no tools needed. the battery is fully compatible with the device QLN220 QLN320ZQ520 ZQ620