There are two common solar battery types:
When considering which type of battery to use, you should consider battery lifespan and warranty, power capacity, and depth of discharge (DoD). Battery lifespan can range from 5 to 15 years. This range is expected to increase as technology improves. Warranty is measured in either years or cycles. Power capacity is the amount of energy a battery can hold at one time. DoD measures the degree to which how much energy you can use of the battery’s total power capacity.
Lithium ion batteries are more compact than lead acid batteries. They have a higher lifespan and higher DoD. However, they are less affordable than lead acid batteries.
Lead acid batteries are more expensive and have a lower DoD compared to lithium ion batteries. They have been used for decades but are now becoming outdated as a result of rising technology.