Battery testing system for power banks(BTS-4000-6V4A-CCDC-USB) is based on Neware BTS4000, it shares all the main feature of BTS4000, such as 0.05%FS accuracy, 10Hz data acquisition frequency, based on Ethernet communication, etc. In another way, as a testing system for power banks, it has its own special features: 1. There are 8 channels for each set, but as you can see