Dear, I am very sorry for causing you an unpleasant shopping experience, but I must clarify what happened. It is understood that the battery is customized according to the size you provided. The size you provided is 280*145*42mm. The salesperson has measured the size (277.55*136.07*39.62mm) and taken pictures (including Connector pictures) to buyers. Regarding the BMS, 15A is the continuous current of the BMS and 30A is the maximum current. The BMS lacks a switch wire. It was not until the buyer received our customized product that the buyer told the salesman that his original BMS had a soft switch. Regarding the quality of the product, you can do testing. Good products are not afraid of testing. We can see from the pictures provided by the buyer that the cells used are DMEGC INR18650-26E cells with a capacity of 13Ah. This is a high-quality cell. Thank you for your support of our company.