NOVELTY - The electric storage module has a voltage detection conductor which detects the voltage of the electric storage units. The casing includes a pair of resin side plates (130,131) that hold and support the electric storage units from opposite sides. The voltage conductor is formed so as to correspond to positions of the conductive sections (150) and placed on each of the side plates.    USE - Electric storage module for electric vehicle, e.g. electric automobile.    ADVANTAGE - Reduces costs and improves reliability by eliminating the need for welding. Allows reuse of the battery module since the wire and current breaking section can be replaced. Protects the battery module by breaking the current at an end of the voltage detection conductor when a short circuit occurs. Provides the side plates with low cost, small size, and high quality so as to ensure insulation creepage distance of the battery module. Prevents accidental contact between the detection lines of the voltage detection conductor during the production process and reduces short-circuit potential in the voltage detection conductor by reliably maintaining the shape of the voltage detection conductor. Reliably secures the voltage detection conductor to the side plates by providing a securing section. Increases the strength of the battery module since the control device functions as a support. Reduces the size of high potential battery block in the height direction and reduces the size of the assembled battery in high direction since the high battery cell row and the second battery cell row are displaced in the longitudinal direction. Ensures high safety for on-vehicle electric machinery system since the relay mechanism controls the lithium ion battery device and inverter device.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electric storage device.    DESCRIPTION OF DRAWING(S) - The drawing shows a partial enlarged perspective view of the side plate having a peripheral wall surrounding the entire periphery of the conductive section.    Side plates (130,131)    Through holes (132)    Peripheral walls (133)    Conductive sections (150)