Hitachi HDB72 ARGOS Instruction Manual page 26

The mark is in compliance with the Waste Electrical and Electronic
Equipment Directive 2002/96/EC (WEEE).
The mark indicates the requirement NOT to dispose the equipment including
any spent or discarded batteries as unsorted municipal waste, but use the
return and collection systems available. If the batteries or accumulators included
with this equipment, display the chemical symbol Hg, Cd, or Pb, then it means
that the battery has a heavy metal content of more than 0.0005% Mercury, or
more than 0.002% Cadmium or more than, 0.004% Lead.
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