✾High Quality Battery: Our replacement battery uses an advanced high-quality A+ battery, which extends the life of the battery and provides you with high-speed and high-efficiency charging over 1000 charging cycles. Equipped with a smart chip to provide your mobile phone with multiple protections against overcharge, overheating, and short circuit.✾Quality certification: Each battery has been tested by strict quality control standards and passed CE and ROHS certification. The quality is safe and reliable,