Details: Please know before buy： Please double check your phone model prior to purchasing to ensure this replacement battery is compatible with your phone (Galaxy J3). REPLACE YOUR OLD BATTERY 1.Made of top-rate A li-ion battery cell provide you over 500 charging cycles with high-speed and efficient charging. 2.High quality copper connectors which provide optimal connection to your phone. 3.The best spare battery for your phone, Keep an extra battery on hand for extend standby and talk ti me. Specifications: * Battery Capacity: 4000 mAh * Battery type: Li-Polymer Battery * Watt-hour: 13.09Wh * Voltage Output: 3.85V COMPATIBLE MODELS: Galaxy J3 EB-BG530BBU EB-BG530BBE J320A J320V J320P J327A J327P Galaxy Grand Prime SM-G530 G530T G530H G530R G530AZ Galaxy J3 Prime Galaxy J3 luna pro Galaxy J3 Emerge For Best Performance: 1. Make sure to fully charge and discharge your new battery 3 to 5 cycles; 2. Use your original charger and cable which came with your phone to recharge this replacement battery. 3. When the battery is depleted, it may take a few minutes for indicator to show when recharging; 4. Recharge the battery once every 3 months if it will not be used for a long period of time. Package included: 1 x Battery for Galaxy J3 Important Notes WARNING: To reduce risk of fire or burns, do not disassemble, crush, puncture, short external contacts or dispose of the battery in fire or water. EXTENDED 3 YEAR WARRANTY: If you are not 100% satisfied with your new battery, just let us know! Contact us via Amazon and we can help with any issues that you may have. Customer satisfaction is our top priority, and that s the our guarantee!