What are the different types of rechargeable solar batteries? Solar batteries can be divided into six categories based on their chemical composition: Lithium-ion, lithium iron phosphate (LFP), lead-acid, flow, saltwater, and nickel-cadmium. The most popular home solar batteries are lithium-ion. This article breaks down the differences to help you pick the right one for your needs. Solar batteries primarily include lead-acid, lithium-ion. . This guide helps you learn what matters before choosing a battery for your home solar system. There are three main types in use today: Lithium-Ion, Lead-Acid, and Flow batteries, each of which has its own strengths and problems.