Zoom H4n Pro Operation Manual page 15

• Remaining battery charge
When a "Low Battery!" warning appears, immediately
turn the unit off and replace the batteries, or switch to
an AC adapter.
If the remaining battery
charge
"Low Battery" will be
shown every two sec-
onds and the unit will
soon turn off.
FULL
EMPTY
becomes low,
NOTE:
Usable batteries
You can use conventional alkaline and nickel metal hydride
rechargeable batteries.
Power supply from USB
Connect a USB cable that is already connected to the
computer to the unit while it is off. Power will be supplied by
USB bus power and the unit will turn on automatically. This
function is only available when the H4n Pro is used as an SD
card reader or an audio interface.
HINT:
To measure the battery charge accurately
The remaining battery charge can be measured more
precisely by using the H4n Pro battery type setting.
Date and time setting retention
If the batteries die or the power supply is interrupted, the
H4n Pro will retain the date and time setting for about three
minutes. After this, these settings will be reset to their default
values.
Power supply indicator
Using batteries Using AC adapter
☞
Ref. P.033
USB bus power
☞
Ref. P.130
Battery type
016