Here is a kit with all the cables needed to connect a battery for a parallel connection on a Xiaomi. The length of the cables is intended for attaching an extra battery to the upper part of the frame, but can also be used to have it on the lower part of the frame.
The connectors are XT30 and the thickness of the cables is 14AWG.
Included in the kit:
1x parallel connection and extension cable is 140cm.
Perfect to combine with
https://www.wattsnabb.se/products/daly-bms-10s-3642v-40a-out-20a-in-med-xt30-kontakt-till-xiaomi