Classification of energy storage batteries
1. Lead-acid battery for vented energy storage - a battery with a device capable of rehydration and gas evolution on the battery cover.
2. Valve-regulated lead-acid battery for energy storage - each battery is sealed, but all batteries have a valve that allows gas to overflow when the internal pressure exceeds a certain value.
3. Lead-acid batteries for colloidal energy storage - batteries with colloidal electrolytes.

Features of energy storage batteries
1. The temperature range used is relatively wide, and it is generally required to operate normally in a temperature environment of -30-60 degrees.
2. The low temperature performance of the battery is better, and it can be used even in areas with relatively low temperature.
3. The capacity consistency is good, and the battery is used in series and parallel to maintain consistency.
4. Good charging acceptance. In an unstable charging environment, it has stronger charging acceptance.
5. Long service life, reduce maintenance and maintenance costs, and reduce overall system investment.