An electrical battery exchanging system for reuse application is disclosed. The system includes: a number of rechargeable battery packs, a battery condition detecting module, a user ID checking module, a power source, a charging controlling module. Since the system can monitor conditions of rechargeable battery cells of the rechargeable battery packs and uses user ID for operating control purpose, it has benefits of conveniently exchanging low-power battery with fully charged one, easily sorting out end-of-life batteries and getting them for recycle or reuse, simply charging service fee and stably operating under a business model.