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5700mAh Li-ion Replacement Battery for Samsung Galaxy S4, I337 ( AT&T ), Verizon I545, Sprint L720, T-Mobile M919, R970, I9500, I9505, Galaxy S4 LTE I9506. PLEASE NOTE:The Samsung Galaxy S4 extended battery is compatible with all Samsung Galaxy S4 models. Please Only use this product with the original manufacturer charge cable. Cheap generic cables have shown to cause issues with functionality and circuitry. Besides, please don't use your cellphone when it's in Charging Package Included: 1 x 5700mAh Samsung Galaxy S4 Battery 1 x back cover 1 x protective case Galaxy S4 Battery Features: * Uses the latest Lithium Ion battery technology. * Integrated microchip prevents overcharging and lengthens battery life. * The best replacement spare battery for your phone. * This Battery could also be charged in the phone directly thru the cell phone charger. Battery Extended for Samsung Galaxy S4 specifications: * Battery Type: Li-Ion * Voltage: 3.8V. * Battery Capacity : 5700mAh / 21.66Wh. S4 Protective Case Extended Features: * Offer instant all around protection from scratches. * Constructed from smooth, treated rubber that resists dirt and stains. * TPU, also known as thermoplastic polyurethane, is more cut and tear resistance over rubber. * This gel case made from a special tough gel, which makes it flexible like a silicone but tougher than a crystal case. * Unique design allows easy access to all buttons, controls & ports without having to remove the skin. * When you get battery, please use up all the energy of battery until your phone shuts down automatically, then take a full charge to use, repeats 3-5 times, thus the battery can be reached the optimum effect of using. Please use the original charger or use big current charger to charge the extended battery.