Shimano E-8000 steps

[Fat tad]

Hello does anybody know what the two extra smaller pins on the battery connector are for on the Shimano E 8000 steps system

 

[Mikey-]

Data, of some kind.
Reporting amps, temperature, voltage, something of that nature. It could be an optional port for the Di2 to utilize, but that wouldn't follow Shimano's tight design in other areas.

 

[33red]

It might be for the shop. Like with cars, a mechanic has the capacity to see errors/problems to help solve them. Maybe even to do updates.