Off-grid solar systems can be paired with many types of lithium batteries, depending on the needs and design of the system. Here are some common types of lithium batteries that are commonly used in off-grid solar systems:
Lithium Iron Phosphate Battery (LiFePO4)
Lithium iron phosphate battery has high safety, long service life and high energy density. They are highly tolerant of high temperatures and overcharge and overdischarge, making them ideal for off-grid solar systems. The cycle life of lithium iron phosphate batteries can usually reach more than 2000 times, and it can still maintain stable performance at high temperatures.
Ternary lithium battery (NMC/NCA)
Ternary lithium battery has a high energy density and a long service life, but its safety is relatively low. They are sensitive to high temperatures and overcharge and discharge, so they require stricter protection. However, under the right conditions, ternary lithium batteries are still an excellent performance option, especially in systems that require high energy density.
Lithium-ion batteries (Li-ion)
Lithium-ion batteries are a versatile type of battery with high energy density and long lifespan. They can work in different environments and are relatively easy to obtain. However, the safety of lithium-ion batteries also requires concern, especially in the case of high temperatures and overcharge and overdischarge.
When choosing a lithium battery, you need to consider the specific needs of the system, such as the system’s power, load, use environment, etc. At the same time, it is also necessary to consider the capacity, voltage, charging and discharging efficiency, safety and other factors of lithium batteries. It is recommended to consult with a professional off-grid solar system designer or supplier when choosing a lithium battery to ensure that you choose the most suitable battery type for the system.