The low capacity of lithium iron phosphate batteries is generated by the following main reasons: a. low amount of attachment; b. large difference in the amount of attachment on both sides of the electrode; c. fracture of the electrode; d. low electrolyte; e. low conductivity of electrolyte; f. poorly matched positive and negative electrode; g. small porosity of the diaphragm; h. aging of the adhesive → detachment of the attachment; i. extra thick core (not dried or not penetrated by electrolyte); j. not fully charged when dividing the capacity; k. small specific capacity of positive and negative electrode materials.