Short Answer: Lithium rack batteries have higher upfront costs but lower long-term expenses due to longer lifespan, minimal maintenance, and better efficiency. Total ownership costs for lithium. . Here are the elements that evaluate the true costs of using lithium batteries for material handling equipment: 1. This assessment is based on the fact that the lithium-ion has an energy density of 3. 5 times Lead-Acid and a discharge rate of 100% compared to 50% for AGM batteries. VRLA comes in two types: Part 5. Battery lifespan comparison: lithium vs.