Situation above shall not be found under normal operation. If it happens then the underwater
drone needs to be returned for repair.
Two main reasons for water seepage:
a) Dive to depth of more than 100 meters underwater.
b) The internal seal of the drone is broken or damaged.
3) Over-current protection: the protective measures can be triggered when the internal current is
too high.
Two main cases for abnormality:
a) Propeller is entangled and cannot rotate.
b) Internal failure of the drone causes short-circuit.
4) Low voltage protection: this protective feature will be triggered when the battery voltage falls too
low. When the voltage falls below 10%, there will be a notification on the app, and when the
voltage drops to 0%, the battery will automatically shut down and the underwater drone will be
unable to move. When this happens, the KAVLAR zero buoyancy cable can be used manually to
pull the drone back to the surface.
5) Motor protection: when the drone is unlocked and no control is performed, if the drone pitch or
roll angles is greater than 60 degrees, the motor will stop and enter a protection mode until both
angles are less than 60 degrees.
Smart Battery
As a standalone component, the drone battery has a built-in smart control to ensure safety. The battery has
the following features:
1. Load detection: before loading, the battery will be in sleep mode and will not discharge. Working only
begins after the battery has been connected to the underwater drone.
2. Battery self-checking: with battery installed, the drone will firstly do a self-check on the battery level to
see whether the power meets the boot requirement.
3. Battery short-circuit protection: when the battery detects short-circuit, the output will be cutoff to
protect the battery.
4. Over-current discharge protection: when there is an over-current during discharge, the output will be
cutoff to protect the battery and external circuits.
5. Battery storage: the battery can be stored short-term in any state. For long-term storage, please refer
to the User Manual of battery.
Shenzhen Aquarobotman Innovative Technologies Co., Ltd.
Professional Underwater Integrated Solutions Provider
Need help?
Do you have a question about the NEMO and is the answer not in the manual?