Unitree B1 - Battery Indicator; Battery Pack Turn On; Turnoff; Battery Pack Charging

B1 User Manual
© 2022 All rights reserved, Unitree Robotics 18
Battery Indicator
When the battery pack is off, the users can check the current battery by shortly pressing the battery switch once.
Be used to display the battery power during the charging and discharging process of the battery pack.
The indicator is defined as follows.
that the LED light is constant on Indicates that the LED light is flashing Indicates that the LED light is off
Battery Indicator Light
LED1 LED2 LED3 LED4 Current Battery
87.5%-100%
75%-87.5%
62.5%-75%
50%-62.5%
37.5%-50%
25%-37.5%
12.5%-25%
0%-12.5%
=0%
Battery Pack Turn on/ Turnoff
 Turn on a battery pack: In the off state, the users can press the power switch briefly once, and then press the
power switch for more than 4 seconds. Turn on the battery after flowing water light glides. When the battery is on, the
power indicator is constant green, and the battery indicator shows the current battery power.
 Turn off the battery pack: In the on state, the users can press the power switch briefly once, and then press the
power switch for more than 4 seconds to turn off the battery. After the battery is turned off, the indicator lights are off.
Battery Pack Charging
1) Connect the charger to an AC power source (100-240V, 50/60Hz). It must be ensured that the external power
supply voltage matches the rated input voltage of the charger before connecting. Otherwise, the charger will be damaged
(the rated input voltage of the charger is marked on the nameplate of the charger).
2) Plug in the input AC power first before charging the battery, then connect the charger to the battery.
3) Before charging the battery, ensure that the battery pack is switched off. Otherwise, the battery and charger may
be damaged.
4) The users need to remove the battery pack from the robot itself when charging the battery pack.
5) In the charging state, the battery indicator of battery pack will flash at a frequency of 1Hz (1 second/time) and
indicate the current battery.
6) If the battery indicator is off, the battery pack is fully charged. Please remove the battery pack and charger to
finish charging.
7) The temperature of the battery pack may be high after running, t, and the battery pack must be charged after the
temperature of the battery pack has dropped to room temperature.