Lithium batteries have significant advantages over lead-acid batteries, leading comprehensively in performance and economy. In terms of energy density, lithium batteries are 3-5 times that of lead-acid batteries. With the same capacity, they are 30% smaller in volume and lighter in weight, which can either improve equipment endurance or reduce load.

In terms of lifespan and cost, lithium batteries can undergo over 2,000 charge-discharge cycles, with a theoretical lifespan of up to 10 years; in contrast, lead-acid batteries only support 300-500 cycles and have a lifespan of 2-3 years. Calculated over a 5-year cycle, lead-acid batteries need to be replaced 2-3 times, resulting in a total cost of 1,200-1,800 yuan; lithium batteries only require a one-time investment. Although their purchase price is higher, their long-term cost is more favorable.

The gap in charging efficiency is obvious: lithium batteries can be fully charged in 1-2 hours, while lead-acid batteries take 8-10 hours. This greatly reduces equipment downtime, making lithium batteries suitable for multi-shift operations. Moreover, the charge-discharge efficiency of lithium batteries reaches 95%, while that of lead-acid batteries is only 70-85%, resulting in less energy loss.

In low-temperature environments, at -20°C, lithium batteries can maintain 70-80% of their discharge capacity, while the capacity of lead-acid batteries drops sharply to around 40%. Thus, lithium batteries are more suitable for special scenarios such as cold chains. Additionally, lithium batteries are maintenance-free and do not require regular water refilling like lead-acid batteries, saving labor costs.

In terms of environmental protection, lithium batteries contain no heavy metal pollution and are easier to recycle and dispose of, conforming to the current trend of green development policies.