Replacement Battery For Samsung Galaxy S3, 2100mAh Li-ion Battery by Procizion (No NFC) Compatible with Samsung Galaxy S3 smartphone. Lithium Ion batteries are designed specifically for your SAMSUNG mobile phone to deliver the most reliable and long lasting power Lithium-ion Polymer Technology for optimum battery life, 2100mAh battery allows you to store the power necessary to keep your device charged throughout the day Builit-in IC chip prevents overcharging and in turn prevents over heating Tested under strict quality control standards. CE and ROHS certified Buy with confidence with our no questions asked 100% money back guarantee!