The grade of a lithium battery is determined by several factors, including its chemistry, capacity, discharge rate, and manufacturing process. Whether you're an engineer, fleet manager, or just curious about the energy systems behind modern devices, understanding how batteries are classified is key to choosing the right technology. This article provides a comprehensive overview of battery classification—from fundamental divisions like. Lithium-ion batteries (LiBs) are the current state-of-the-art in this technology, since this battery type is characterized by high energy density, low self-discharge rate, and good cycle durability. Gradually replacing traditional nickel cadmium batteries and nickel hydrogen batteries. Compare the Lithium Content (g Li) or Watt-hour (Wh) to criteria for sizes.