Each Batteries have their uses, for off-grid use you may have specific needs and may require different types of batteries, here is an comparison of the different types on batteries we have suited for off-grid use and standalone systems.
Lithium-ion batteries are a newer form of battery storage, lithium-ion batteries can be discharged deeper and have generally longer lifespan compared to lead-acid batteries, of around 13-18 years. Lithium-ion solar batteries have higher energy density so it can store more power relative to its size, they also do not require as much maintenance as lead acid batteries. Lithium-ion batteries have a 80% depth of discharge and 95% battery efficiency. Average warranty period Is 10 years.
Commonly used in vehicles, lighting, UPS systems, and energy storage applications. Containing a mix of lead dioxide, sulphuric acid and water. This creates a chemical reaction which can store and output electricity. Known for their reliability, Lead acid type batteries have a proven track record of several decades, with relatively lower costs than other batteries, they also take up a lot of space and may emit hydrogen gas. Lead acid batteries have a depth of discharge of 15-30% and 80-85% battery efficiency. They generally have a lifespan of just under 5 years.
Gel Batteries are valve regulated lead-acid (VRLA) batteries that do not release gas. Gel batteries keep the electrolyte suspended in a gel rather than a fiberglass matt. They are sealed, maintenance-free, with a 20-40% depth of charge and 80% battery efficiency. Have a lifespan of up to 12 years, they are a viable option for the budget minded for their reliability and low cost.