Buttner Elektronik MT iQ Basic Bedienungsanleitung Seite 27

After 999 Ah is reached, the display returns again to 10Ah.
If the correct value appears in the display and you make no
further entries for 10 seconds, the value shown as capacity
is stored in the equipment.
After programming the battery capacity, the battery
computer computes a preliminary residual capacity based
on the battery current. Please charge your batteries
subsequently for at least 24 hours so that the battery
computer can ascertain the actual capacity of your
batteries.
Bütner Elektronik – MT iQ Basic
EN
27