Longer life span: Lithium iron phosphate batteries live up to 5000 cycles at 80 percent depth of discharge, without decreasing in performance. Ensure 8-10 years life span. While some lead-acid batteries only have 300 cycles and have just two years of service time.
Maintenance-free: No need for maintenance to extend their life. The battery shows no memory effects. Can be store for a long time due to low self-discharge.
Safe and ECO-friendly: LiFePO4 battery not contain heavy metal and rare earth metals. It’s thermal and chemical stability, which improves battery safety.
Compact size: Compare to a lead-acid battery, the LiFePO4 battery is relatively small and lightweight. Because it offers high power density. About 160Wh/kg-185Wh/kg nowadays.
High efficiency: Fast charging and discharging. Fast charging reduces any downtime and increases efficiency. High discharge pulse currents deliver bursts of power in a short amount of time.
Summary: After compare lead-acid battery and lithium battery, we’ll know that lithium battery is ideal for the solar parking lot light. Because solar panel, battery, and light fixture all installed on the top of the pole, and have to withstand high wind, it’s require lightweight. The battery should have a high power density for more backup days.
The lead-acid battery may suitable for another solar light due to its low cost but not better for the solar parking lot light.
