Hitachi 3000 - Manual (Page 18)

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Chapter 1
Overview
Using accessories
These guidelines cover the accessories for this product.
Accessories
■ Battery pack
■ AC power supply adaptor
■ Charger
Battery pack installation method
While pressing the rear cover in direction (1), slide the rear cover in direction (2) and remove it.
With the precaution label of the battery pack facing up, install aligning the battery pack and main unit metal terminals.
Fit the rear cover into the grooves on the main unit, then slide in direction (3) until you hear the cover click into place.
(1)
(2)
(3)