Infinix BL-49NX Battery, the perfect replacement for your Smart7 mobile battery. With a capacity ranging from 1000 mAh to 5000 mAh, this 100% original battery comes with a one-week warranty. Say goodbye to frequent charging and enjoy long-lasting power for your mobile device. Trust in the reliabiInfinix BL-49NX Battery, the perfect replacement for your Smart7 mobile battery. With a capacity ranging from 5000 mAh, this 100% original battery comes with a one-week warranty. Say goodbye to frequent charging and enjoy long-lasting power for your mobile device. Trust in the reliability and performance of this battery, designed to keep your phone running smoothly. Whether you're at work, home, or on the go, this battery ensures uninterrupted usage. Invest in the Infinix BL-49NX Battery for a seamless mobile experience. Charge the battery for at least 2 hours before using it for the first time. Please use the original charger or professional battery charger. Don't place your battery near a heat source. Excessive heat can damage the phone battery, the battery could become very hot. Always charge the battery at near room temperature(0°- 45°) Do not disassemble or modify the battery for any other purpose. Do not expose the battery to liquid or subject to strong mechanical shocks. User Guide. 1- Do not use mobile while charging. 2- Kindly do not do over charge. 3- Use Orignal charger to charge your mobile battery. 4- Do not put your mobile near heat.