▎ 摘　　要

NOVELTY - A flexible activator is prepared by using 0.05-0.5 wt.% polyvinyl alcohol, 0.02-0.5 wt.% fumed silica, 0.01-0.5 wt.% biothiol, 0.01-0.2 wt.% nano carbon material, 0.01-0.5 wt.% sulfate and 97.8-99.9 wt.% deionized water. USE - Flexible activator for retired lead-acid batteries (claimed) for energy storage battery, communication backup power supply battery, automobile starting battery and traction battery. ADVANTAGE - The flexible activator has scientific prescription, strict proportion. The addition of electrolyte will not increase the battery internal resistance, and not change the original electrolytic performance. The method is simple and easy to damage the preparation condition is mild, the cost is low, and the obtained activator is convenient to use. The activation method provided by the invention can effectively remove the lead sulphate crystal in the battery, keep the internal active substance and the internal structure of the battery will not cause pole failure. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of the flexible activator; and (2) activation method for retired lead-acid battery, which involves using the flexible activator.