Elop doesn't have 2500mA, but the genuine one is 1900-2000mA. This batch of batteries will never just flash 100. I have six groups of Ailepu, three groups in each generation, and I have never encountered such a situation all the year round. Generally speaking, my personal principle is to prepare at least three groups for each flash, but it is usually a whole day. By the way, the lamps used may be different. Different lamps with the same battery will have different results. Some lamps have better power management, so make full use of power. Some poorly designed circuits may cause "non-combat consumption" of the power supply, that is, three-point flash and seven-point discharge, so your power will go faster.