To: All users of MiR robots
From: MiR Global Technical Compliance
Date: 2026-02-19
Subject: PRODUCT NOTICE - Disconnecting or connecting the battery while charging and
connecting multiple chargers
The power board on a MiR robot at a customer location was damaged when a cable charger and a charging station
were both connected, and the battery was disconnected at the same time.
MiR robots are provided with a battery disconnect to allow isolation of energy for maintenance or battery swapping.
MiR robots also include two connections for charging; a plug/receptacle connection to connect a cable charger and
charging contacts located on the bottom of the robot for a charging station. The power board is not designed to
facilitate charging from two sources at the same time, and harmful electrical surges can be created if the battery is
disconnected or reconnected while charging.
Do not disconnect and connect the battery while the robot is charging. Disconnecting or connecting the battery
while a charger is connected can damage the power board.
Do not connect a cable charger and a charging station at the same time. Connecting two chargers at the same time
can damage the power board.
WARNING
Disconnecting the battery while a charger is connected or connecting two battery chargers
simultaneously can create electrical surges that damage the power board and render the robot
inoperable.
To prevent this situation:
- Never disconnect the battery when a charger is connected
- Never connect the battery when a charger is connected
- Never connect a cable charger and a charging station at the same time
- Only use approved chargers provided by MiR
Helpful links:
- Charger and robot compatibility:
https://supportportal.mobile-industrial-robots.com/documentation/misc/charger-and-robot-compatibility/ - How to use the 48V cable chargers:
https://supportportal.mobile-industrial-robots.com/documentation/how-touse/how-to-use-the-48v-cable-chargers - MiR Charge 48V User Guide:
https://supportportal.mobile-industrial-robots.com/documentation/mir-charge-48v-manuals/mir-charge-48vuser-guid