Title: +038=370.101-OE002T_02-Multical 801 Energimåler Kamstrup - Teknisk beskrivelse.pdf
10.1 Built in battery backupThe built-in backup battery maintains all basic energy meter functions, including flow meter supply on terminal11-9-10 (V1) as well as terminal 11-9-69 (V2) during power failure. The battery backup does not support functions with high power consumption, such as back illumination of display and analog outputs.The type number of the backup battery is 66-99-619 (2xA lithium battery with plug)The lifetime of the backup partly depends on how long MULTICAL® 801 remains without mains supply and partly on the temperature, to which the battery is exposed.Backup, expected lifetimeMULTICAL® 801With supply 10 yearsWithout supply 1 yearThe expected back-up lifetime is reduced proportionally to the time the meter remains in stock. After a long period in stock, or if in doubt, the back-up battery ought to be replaced before the meter is installed. Having changed the back-up battery, the clock must be adjusted via METERTOOL.