BMS starts working after connecting the thermal protection switch. When connecting the BMS to the battery pack, connect the 13 pin B0–B13 connector to the BMS before connecting the 12 pin B13–B24 connector. For battery packs under 24S, the additional balance wire should be removed from the GH2.0 connectors. For example, and 18s battery will have balance connections from B0-B18, and B19–B24 disconnected. 15s batteries will have connections from B0-B15 and B16–B24 disconnected.