Hioki 3640-20, Instruction Manual, Page: 15 / 40

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2.1 Replacing the Battery
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WARNING
During battery replacement, use caution not to put any
foreign materials such as a metal object into the unit to
avoid damage to the unit.
Before using the product after replacing the batteries,
replace the cover and screw.
Do not mix old and new batteries, or different types of
batteries. Also, be careful to observe battery polarity
during installation. Otherwise, poor performance or
damage from battery leakage could result.
Handle and dispose of batteries in accordance with
local regulations.
CAUTION
When exchanging the batteries, the circuit may sometimes
short circuit due to static electricity. As far as possible, do
not touch the base board with bare hands.
Chapter 2
Set Up
2.1 Replacing the Battery
Installing new batteries ensures about 1 year of recording.
(reference value with interval setting set to 1 minute or
more, power save setting set to valid and at 20 )
Remaining battery power indicator (
) indicates
remaining battery life reducing incrementally from right.
Empty battery power indicator (
) indicates time to
replace batteries.