Even then the wireless connection is only between batteries and vehicle. The vehicle's central BMS has a cloud connection but that's a separate issue. > Unlike

Even then the wireless connection is only between batteries and vehicle. The vehicle's central BMS has a cloud connection but that's a separate issue. > Unlike today’s battery modules, which link up to an on-board management system through a tangle of orange wiring, GM’s system features RF antennas integrated on circuit boards. The antennas allow the transfer of data via a 2.4-gigahertz wireless protocol similar to Bluetooth but with lower power. Slave modules report back to an onboard master, sending measurements of cell voltages and other data. That onboard master can also talk through the cloud to GM.