Abstract: In this paper, a 6-CNF-100 energy storage battery was fabricated by adding 13Ah negative plates with different graphite content into the negative plate formula. By comparing and analyzing the changes of the electrode surface, the capacity of the battery, the low temperature performance and the cycle performance, etc. The experimental results show that the graphite content in the negative plate formula has an obvious effect on the apparent change, the capacity, the low temperature performance and the cycle performance of the battery. When the graphite content is 3%o in the negative plate formula, it is suitable. Too Large or too small will have a negative effect on the performance of the battery. In this range, the appearance of the plate, battery capacity, low. temperature performance, and cycle performance are assured.