User's Guide

3. How to install the battery
Installation steps are as follows:
XJ-01 User Guide
1. Open the back cover of battery.
2. Install the battery,be certain to follow the marks on the inside of the
box according to the battery indicator symbols.
3. Slide the battery cover towards the top of the unit until it is completely
closed.
Note:
1. There are two ports of the charging line, USB port connects 5V DC
power supply,another connects the sonar sensor’s DC jack.
2. When the probe’s battery is lower than 3.2V, the battery indicator
symbol on the host screen will twinkle. It means the probe should stop
working and need to charge.
3. If there is water inside,please don't charge,to avoid adverse
consequences,and it should be sent back to the factory to get maintenance
as soon as possible!
4. When charging, charging indicator (red) will be on; and the light will
be off when the batteries are full.
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