Celio 4300mAh battery + USB Charger For Samsung Galaxy S5 i9600 1. High quality Li-Ion battery 2. Best replacement for the original battery with comparable standby and talk time 3. Keep an extra battery on hand for extend standby and talk times 4. Integrated microchip prevents overcharging and lengthens battery life 6. Our battery is sent out with little or no power, so please charge it for about 4 - 6 hours before using