RYOBI introduces the USB Lithium 2.0 Ah Lithium Rechargeable Battery. Providing convenience on-the-go, this battery will charge your small portable devices like your phone or smart watch. The on-board LED fuel gauge takes away the guess work by clearly indicating the battery level status. This battery features a USB-C charging port for easy charging with any USB-C cable. This battery is easily interchangeable across all USB Lithium products for cordless portability and minimal downtime.