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SB20 Power Sources
There are two ways to get power data from the SB20:
- “Stages Bike SB20”
- Left Crank
The left crank is the source for power data. The SB20 bike relays power data it gets from the left crank.
Left crank is special: it also gets data from the right crank and sends combined L:R data with its power data updates.
You should try connecting only to the SB20 Bike for both bike control and power. If you start having problems like missing data, you should connect the SB20 Bike for bike control and your left crank for power.
You need to track how you connect to devices (Ant+ or Bluetooth) and how many times.
In general, IOS and Android devices user Bluetooth. Bike computers, like Garmin, use Ant+. PCs and Mac use Bluetooth and occasionally Ant+ with a special dongle.
Internally - between SB20 and cranks - Stages use Ant+. There are options in the Stages Link app to use Bluetooth for this internal communication. Don’t do it! This option consumes precious Bluetooth connections. People mistaken believe Bluetooth is somehow better than Ant+. 99% of the time this statement is false. Bluetooth connections are strictly limited. Ant+ connections are not. Allow Ant+ to be used where you can.