The Tesla D Black+ batteries are powerful alkaline batteries specifically designed for applications with high energy demands. With a voltage of 1.5 volts, these batteries are ideal for devices that require a reliable and consistent power source. The D size, also known as LR20 or Mono, makes them a versatile choice for a variety of electronic devices, from toys to portable gadgets. Each sales unit contains two batteries, allowing for easy handling and storage. Weighing 50 grams per battery, they are lightweight yet robust enough to ensure reliable performance. It is important to note that these batteries are not rechargeable, making them a practical solution for short-term use. The Tesla D Black+ batteries are an excellent choice for anyone seeking a dependable power source for their devices.