4Pack 9V Rechargeable Battery 3800mWh 9 V High Capacity Lithium Batteries for Smoke Detectors, Microphone, Alarms, Toys, Torches, Medical Devices etc

Convenient USB-C Charging Design The 9V lithium battery features a built-in USB-C port and comes with a 2-in-1 fast charging cable, allowing direct charging from any USB power source (e.g., PC, car charger, or power bank)—no extra charger needed. The built-in LED indicator lets you check the charging status easily

Wide Application 9 volt rechargeable batteries is suitable for various household devices, such as smoke detector alarms, fire alarms, thermometers, garage door openers, toys, GPS, metal detectors, walkie-talkies, digital cameras, game controllers, toys, clocks and medical devices etc

3800mWh High CapacityThe 9V rechargeable battery have longer battery life than disposable alkaline batteries, economic, no memory effect and saving your money. Brand New 0 Cycle battery cell capacity to store more power, bring more standby time, it will provide you over 1000 charging cycles with high-speed and efficient charging

High Quality Lithium BatteryOur battery is a lithium-ion boost type 9V battery. It uses an internal circuit to stably boost the 3.7V to a 9V output, ensuring that your device always operates at its best, with more power and better performance.The Rechargeable 9 Volt Lithium-ion Battery has tested under strict quality inspection and testing. The built-in A-grade high-quality batteries can effectively prevent overcharge, overdischarge and overheat protection, short circuit protection, and durable

NotePlease check the quantity you purchased before you order. And make sure to fully charge and discharge your new battery 3 to 5 time, full performance and longevity is only achieved