Compared to lead-acid batteries, lithium batteries for solar are more energy efficient and require less maintenance. They use a lithium salt as the electrolyte to store electricity and are much more forgiving to irregular charge and discharge cycles.
The best option for residential and commercial applications, these lithium batteries are the ultimate clean energy solution. They deliver safe, high-power energy that you can depend on around-the-clock, even in harsh environments.
A lithium battery with a longer lifespan than lead-acid is the perfect choice for off-grid, self-reliant, and solar-dependent homes. When selecting a battery, it’s important to look for a life cycle count and check the warranty period.
Lifecycle counts (sometimes called “DoD” in lithium batteries) estimate how many full recharges a 12v battery will be able to provide before it starts degrading. The higher the number, the longer your battery will last.
The highest DoDs are found in lithium iron phosphate (LiFePO4) batteries, which are a type of deep-cycle battery that’s similar to the lead-acid deep-cycle starting batteries in cars. They’re incredibly long-lasting, and can discharge up to 100% DoD without losing any efficiency.
These deep-cycle batteries are also safer than lead acid, as their internal heat generation stays below a threshold that makes them less likely to fire up. They are also more affordable than lead-acid and provide a wider range of installation options.
These are some of the best batteries for solar power systems. To learn more about lithium solar batteries, read our guide to choosing the right battery for your needs!