Denso BHT-M70 Series Operator's Manual page 8

3.2 Inserting and removing the main battery
3.2.1
Inserting the battery
Insert the battery in the arrow direction.
3.2.3
Removing the battery
Push the battery cover locks in the arrow direction.
Battery terminal
3.2.2
Push the battery in the arrow direction.
3.2.4
Pull out the battery with the battery tab held.
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