LDSMNLI USB Rechargeable 9V Lithium Batteries - 4 Pack 1100mAh Long Lasting Li-ion Batteries with 4-in-1 USB C Charging Cable for Wireless Microphones Smoke Alarms Metal Detectors Guitar

The LDSMNLI rechargeable 9V lithium batteries deliver a lasting 3960mWh capacity with consistent voltage output until fully depleted and no memory effect. Designed for efficiency, these batteries support up to 500 full charge-discharge cycles and can be fully replenished in just 2.5 to 3 hours using the included 4-in-1 USB-C charging cable, eliminating the need for additional chargers. The built-in Type-C port and LED indicators provide convenient charging and clear status monitoring. Advanced safety features protect against overcharge, over-discharge, overcurrent, overvoltage, and short circuits, ensuring secure operation. Ideal for frequent-use household devices, these batteries power smoke alarms, wireless microphones, toys, GPS units, home security, medical equipment, and more with reliable, long-lasting performance.