When comparing the long-term costs of lithium-ion batteries to lead-acid batteries, several factors come into play:
Initial Cost
- Lead-Acid: Generally, lead-acid batteries are less expensive upfront, with costs ranging from $100 to $200 per kWh.
- Lithium-Ion: Lithium-ion batteries are more expensive initially, with costs between $300 to $500 per kWh.
Lifespan and Durability
- Lead-Acid: Typically last for 3 to 5 years, requiring frequent replacements. They can handle around 200 to 400 charge cycles.
- Lithium-Ion: Can last for 10 years or more, with up to 4,000 charge cycles or more.
Depth of Discharge (DoD)
- Lead-Acid: Limited to a 50% DOD to prolong lifespan, meaning more batteries are needed for the same usable capacity.
- Lithium-Ion: Can be deeply discharged (up to 100%), allowing for a smaller battery size to achieve the same usable capacity.
Maintenance and Efficiency
- Lead-Acid: Requires regular maintenance such as watering and cleaning, and they are less energy-efficient.
- Lithium-Ion: Requires minimal maintenance and offers higher energy efficiency, resulting in less energy loss during charging.
Total Cost of Ownership
Despite higher upfront costs, lithium-ion batteries become more cost-effective over time due to their extended lifespan, lower maintenance requirements, and greater efficiency. The total cost of ownership for lithium-ion is about 2.8 times cheaper than lead-acid batteries when considering factors like replacement and maintenance costs over their lifespan.
Overall, while lead-acid batteries are cheaper initially, lithium-ion batteries provide significant long-term cost savings through reduced replacement needs, lower maintenance, and higher efficiency.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-does-the-cost-of-lithium-ion-batteries-compare-to-lead-acid-batteries-over-the-long-term/
