Varta element Series Instruction Manual page 60

Call up the next screen "battery modules" with "next".
 Enter the serial number(s).
NOTE: This applies to all battery modules which have not yet been
registered.
i
Subject to modification!
60
If the storage is connected to the Internet, the
serial number or the serial numbers of the
installed battery modules will be transmitted
automatically.
The battery module has to be registered at the
latest 11 weeks after delivery.
Updated 10/2017