Owon DSO-2072H Quick Start Manual page 22

symbol indicates battery power supply;
symbol indicates that there is only about five minutes of use time left.
Please charge as soon as possible according to the relevant tips to avoid
damage to the battery.
Charging Method
Charging the battery through the power adapter: Connect the oscilloscope to
the power socket through the USB data cable and power adapter.
Charge the oscilloscope through the USB interface: Connect the oscilloscope
to a computer or other equipment through a USB data cable for charging (pay
attention to the load capacity of the power supply equipment to avoid
abnormal operation of the equipment).
Note
To avoid overheating of the battery during charging, the ambient temperature
must not exceed the allowable value given in the technical specifications.
Battery Replacement
a) Preparation
1) Switch the product OFF.
2) Disconnect any measuring leads and/or USB cable from the product.
b) Replacing the rechargeable batteries
1) Remove the 1x battery compartment cover screw located underneath the
bracket stand.
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