Battery-powered electric trolley

Battery-powered electric locomotives are powered by batteries. Battery charging typically occurs in the underground locomotive garage. Once the battery pack on the locomotive reaches a certain level, it is removed and replaced with a fully charged one. Therefore, each locomotive must be equipped with 2-3 battery packs.

Advantages: No spark-induced explosion risk, suitable for use in mines with gas; no need for wiring, flexible usage, ideal for small output and irregular tunnel transportation systems as well as tunnel excavation and transportation.

Drawbacks: Requires charging equipment; High initial investment; Low energy efficiency; Higher transportation costs.