The high frequency of extreme natural disasters may cause long?term power outages in the island distribution network. The flexible deployment of batteries at the required sites through trucks and other vehicles can help ensure the power supply of the island distribution network and reduce power outage losses. During the recovery process, extreme weather may affect the transfer speed of batteries between sites, resulting in non?integer hours of scheduling time between sites. In order to solve this problem, this paper proposes a new optimization strategy for load restoration of island distribution network. First, the impact of environmental factors on renewable energy generation and battery transfer time is analyzed. On this basis, a dual?state decision?making method for coordinating scheduling steps and non?integer?hour battery transfer time is proposed. In addition, based on the 1?hour scheduling step length, an optimal island distribution network load recovery model that integrates battery scheduling decisions and network reconfiguration decisions is proposed. Finally, the effectiveness of the proposed strategy is verified by a simulation example.