1. Brand new and high quality Li-ion battery for iPhone SE 2. Best replacement for the original battery with comparable standby and talk time 3. The Li-ion battery provides excellent continuous power sources to your device 4. Use the authorized charger only 5. If you don't use the battery for a long time, please put it in a dry and cool place and make it full charged once every three months 6. Compared with Nickel-Cadmium battery, the Li-ion battery has no memory effect 7. Integrated microchip inside prevents overcharging and lengthens battery life