Energy storage batteries are classified into the following three categories:
1. Exhaust-type lead-acid battery for energy storage - a battery with a cover that can replenish liquid and release gas.
2. Valve-regulated lead-acid batteries for energy storage - Each battery is sealed, but each has a valve that allows gas to escape when the internal pressure exceeds a certain value.
3. Gel-type lead-acid batteries for energy storage - batteries that use gel electrolytes.
Lead-acid batteries used for energy storage must have the following characteristics:
1. It has a wide operating temperature range, and is generally required to operate normally in a temperature environment of -30 to 60℃.
2. The battery should have good low-temperature performance so that it can be used even in areas with relatively low temperatures.
3. Good capacity consistency, maintaining consistency in both series and parallel battery connections.
4. Excellent charging acceptance. It exhibits stronger charging acceptance in unstable charging environments.
5. Long lifespan reduces maintenance and repair costs, lowering overall system investment.
