Hitachi NJI-350B - Manual (Page 7)

4. Maintenance
DANGER
• Never connect the and of the battery in reverse. Also, never charge, disassemble, heat, place in fire, or
short circuit the battery.
There is a risk of an explosion or fire.
PROHIBITED
• Never disassemble or modify the unit.
These actions may result in a fire, malfunction, or failure.
CAUTION
• Be sure to turn off the power supply before removing or attaching the module/unit.
Otherwise, it may result in an electric shock, malfunction, or failure.