The most popular batteries for solar street lights include lead-acid battery, colloid battery, Lithium-iron phosphate battery, and Ternary lithium battery.
- Lead-acid battery: The lead-acid battery contains lead, lead dioxide, and dilute sulfuric acid. The chemical reaction among them discharges electricity. They have a relatively high conversion rate and a low price and are therefore popular.
- Colloid battery: The colloid battery applies gelated electrolyte, which makes the storage of electricity more stable and safer.
- Lithium-iron phosphate battery: The movement of the lithium ions and electrons in the battery provides energy. It has a long lifespan, and the chemical reaction is safe.
- Ternary lithium battery: This battery makes use of the material that contains Ni, Co, and Mn. It is cheaper than a lithium-ion battery and can resist low temperatures.