Abstract: A hybrid battery module of the present invention includes a lithium iron battery pack and a lithium manganese battery pack. The lithium iron battery pack includes at least one lithium iron battery which is electrically connected in series, and the lithium iron battery has an anode and a cathode. The lithium manganese battery pack includes at least one lithium manganese battery which is electrically connected in series, and the lithium manganese battery has an anode and a cathode. The lithium iron battery pack and the lithium manganese battery pack are electrically connected in parallel to each other. Thereby, the hybrid battery module has high discharge efficiency, high electric capacity, a small volume and a light weight. Furthermore, the production cost of the present invention is lower than a complete lithium iron battery pack, and the hybrid battery module is much safer to be used than a complete lithium manganese battery pack.

Abstract: A connecting assembly of the present invention is used for connecting a first battery to a second battery. The connecting assembly includes a base plate, two side plates and two fixation plates. The base plate is provided for being placed on a top surface of the first battery. The side plates extend from the base plate and extend away from the first battery. The fixation plates extend lateral from the side plates. A predetermined distance is defined between the fixation plates and the base plate. The fixation plates are provided for the second battery to be connected therewith. As such, the second battery can be firmly assembled on the first battery by the connecting assembly. Batteries can be gathered up so as to be easily assembled.