Electrical Connection - thyr cont VD81 Betriebsanleitung

3.3 Electrical Connection

Battery operation
Before operating the VD81 a suitable battery or rechargeable battery must be
inserted.
For this purpose pull the battery cover on the back of the unit downwards and
insert the battery as shown on the pictures below. Close the cover again by
pushing it upwards until it snaps into position.
Battery types:
9V AlMn block battery type 6LR 61; lifetime max. 2500h
-
9V Lithium block battery; lifetime max. 5000h
-
9V NiCd rechargeable battery 150mA; lifetime max. 500h
-
Poor battery power is indicated by the ''BAT''-prompt in the up-
per left corner of the display. The device still can be used. Only
when the battery is flat the vacuum meter is switched off.
Rechargeable batteries have to be removed for charging. Please
use suitable, commercially available chargers.
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