Long-life solar batteries are designed to endure increased usage cycles over time. Lithium-ion batteries, mainly those with lithium iron phosphate (LiFePO4) chemistry, boast a cycle life of 2000-5000 cycles or even more. Their construction works to internally lower resistance and overall degrade over time. Advanced battery management systems (BMS) are integrated in these batteries to track charging and discharging, optimizing performance and lifespan. These long-life solar batteries reduce both replacement expenses as well as the overall environmental impact, making these the preferred option for long-term reliable energy storage systems.