Quick Answer: Most lithium-ion solar batteries last 10-15 years with proper care, while lead-acid batteries typically last 3-7 years. Temperature is the ultimate battery killer: For every 8°C (14°F) increase above 25°C, battery life can be reduced by up to 50%. If properly cared for and discharged to no more than half of their capacity on a. When compared to lead-acid batteries, Nickel Cadmium loses approximately 40% of its stored energy in three months, while lead-acid self-discharges the same amount in one year. Lead-acid work well at cold temperatures and is superior to the lithium-ion when operating in sub-zero conditions. The design life depends on the manufacturing process and factors like temperature and usage. Regular maintenance may also impact service life. Lithium nickel manganese cobalt (NMC): These offer a balance between energy density and lifespan. Factors such as discharge depth, charge cycles, environmental conditions, and maintenance all.