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• a battery that has remained uncharged over a long time period,
will sulphurize very easily (sulfur deposits on the plates) and will
lose capacity as a result.
• a charged fault-free battery has a no-load voltage of 12.7 V or
more. A defective or uncharged battery has a no-load voltage of
10.5 V or less.
Disposal
Dispose the unusable, irreparable lead battery tester in accordance
with valid laws.
Reasons for Error Messages:
Er 2 is shown if the relay contact of the charge relay is not
open and will release a tone signal. Disconnect the bat-
tery tester from the battery to prevent an overload.
Knock with a screwdriver on the hexagon nut at the bat-
tery tester's rear to release the strucked relay. If the relay
does not unscrew, the battery tester must no longer be
used for charge measurements. Have the device repai-
red in a technical shop.
Er 1 is shown if the relay contact of the charge relay is not
open and will release a tone signal. The resistance is
probably too high or the control is defective. Have the
device repaired in a technical shop.
Maintenance
The lead battery tester is maintenance-free except for occasional
cleaning of the clamps and unit cover. It may not be opened under
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