Designed with a charging socket and an output port. Can be used to install an lithium battery for your electric vehicle. For electric bicycles, electric bicycles and folding electric vehicles. Color: Black (As Pictures Show). Size: About 330x155x86mm(As Pictures Show). Charging socket model: DC2.5/con. Battery standard: 1865o/21700 lithium battery. 1 x Battery Box (case ONLY, battery NOT included). The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Please allow slight manual measurement deviation for the data. Please kindly note that. Also, the each additional item means. The the same color and size. Transit time may be a little delayed because of the. If you have any questions.