Get your hands on a 1-Pack or 2-Pack of SMARTOOOLS 9V Lithium Polymer Rechargeable Batteries. These batteries offer a high capacity of 650mAh and can be fast charged in just 1.5 hours. With 1200 cycles of use, these batteries are durable and reliable. They come with a Type C cable for easy recharging via USB, making them perfect for a variety of devices.