Battery electric locomotives use batteries to supply electricity. Battery charging generally operates in underground motor garage. When the battery pack of the electric locomotive is used to a certain extent, it is removed and replaced with a fully charged battery. Therefore, each locomotive must be equipped with 2-3 sets of batteries.
Advantages Of Battery electric locomotives : No spark detonation danger, suitable for use in mines with gas; no need to wire, flexible use, for small output, irregular roadway transport system and roadway driving transport is very suitable.
Battery electric locomotives Disadvantages: Charging equipment must be set up; large initial investment; low power efficiency, high transport costs.