Hitachi DH 24DV Technical Data And Service Manual page 19

(8) Do not insert foreign objects into the air vents on the charger.
The charger case is equipped with air vents to protect the internal electronic components from overheating.
Caution the customer not to allow foreign materials, such as metallic or inflammable objects, to be dropped or
inserted into the air vents. This could cause electrical shock, fire or other serious hazards.
(9) Do not attempt to disassemble the storage battery or the charger.
Special devices, such as a thermal protector are built into the storage battery and charger to permit rapid
charging. Incorrect parts replacement and/or wiring will cause malfunctions which could result in fire or other
hazard. Instruct the customer to bring these units to an authorized service center in the event repair or
replacement is necessary.
(10) Disposal of the Models EB 2420 and EB 2430H batteries
Ensure that all customers understand that the Models EB 2420 and EB 2430H batteries should be turned in to
a Hitachi Power Tool sales outlet or authorized service center when they are no longer capable of being
recharged or repaired. If thrown into a fire, the batteries may explode, or, if discarded indiscriminately, leakage
of the cadmium compound contained in the battery may cause environmental pollution.
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