The common energy storage battery is a lead-acid battery (a lithium-ion energy storage battery with lithium iron phosphate as the positive electrode material is being gradually developed).
Energy storage batteries are divided into the following three categories:
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 has a valve that allows gas to escape when the internal pressure exceeds a certain value.
3 Lead-acid batteries for colloidal energy storage - batteries using colloidal electrolytes.
