Which is better for a hybrid inverter: lithium or lead-acid batteries?

Lithium (LiFePO4) batteries offer longer cycle life (3,000-6,000 cycles vs 500-1,500), higher efficiency, smaller size, and less maintenance. Although the upfront cost is higher, they are more economical long-term. Lead-acid batteries are cheaper but shorter-lived and require regular maintenance. Choose based on budget and expected service life.