Lead acid batteries can be categorized into two main types:

1. Flooded Lead Acid Batteries: These traditional batteries have liquid electrolyte and require regular maintenance. They are commonly used in automotive, marine, and backup power applications.

2. Sealed Lead Acid (SLA) Batteries: Also known as valve-regulated lead acid (VRLA) batteries, they are maintenance-free and come in two subtypes - AGM and Gel. SLA batteries are widely used in UPS systems, telecommunications, and renewable energy storage.

Choose the appropriate lead acid battery type based on your specific application requirements.