All you need to achieve extra ~30 km of range. No firmware upgrade is required - "plug and ride".
Xiaomi M187/M365/PRO/Essential/1S/PRO2 compatible.
The kit contains of:
Mounted bag - 1 pcs,
36V 10s5p 12750mAh battery based on EVE INR18650-26V cells - 1 pcs,
Rita adapter - 1 pcs.
Pre-order. Estimated dispatch date is May 24.