Lead-acid solar batteries are one of the oldest and most widely used energy storage solutions for solar power systems. They store electricity generated from solar panels and are known for their low upfront cost and reliable performance. These batteries are available in types like flooded lead-acid (FLA) and sealed lead-acid (SLA, including AGM and Gel), each suited for different applications.
Although they have a shorter lifespan and lower efficiency compared to lithium-ion batteries, lead-acid batteries remain popular in off-grid and backup power systems due to their affordability and proven technology.