High quality replacement battery with original capacity. After installing the battery, an error message appears. This does not affect the functionality of the device. Product features: - Brand new battery cells with no charging cycles and original capacity. - Universal APN - 100% compatible with your phone. - Up to 800 battery charging cycles ensure long-term use - Chipset made in Japan with multiple protection protocols, including overheating and overcharging protection, ensures maximum product safety. Specifications: Battery chemistry: Li-Ion Capacity: 3969 mAh Input voltage: 4.35 V Output voltage: 3.79 V Scope of delivery: - 1x Prio replacement battery - 2x battery stickers - 1x manual (EN, FR, PT, GR, DE, IT, PL)