Quick answer
To replace the mBot battery, power off the robot, open the battery compartment, disconnect the old Li-polymer battery, connect the new one, and secure the compartment. Charge the new battery fully before first use.
Why replace the battery yourself?
The mBot Li-polymer battery is a consumable part. Over time, it loses capacity and may no longer hold a charge. Replacing it restores your robot's run time and avoids interrupting classroom or home projects. This guide covers the standard mBot (blue & pink) models.
Choosing the right replacement
Always use a compatible Li-polymer battery designed for the mBot. The Rechargeable Li-polymer Battery for mBot Robot Kit offers protective circuits against overcharge, overdischarge, short circuit, and overcurrent. It charges in about one hour and lasts 2-5 hours in offline mode.
Step-by-step battery replacement
- Power off and remove the battery cover: Turn off the mBot using the main power switch. Place the robot upside down on a soft surface. Slide the battery compartment cover open and set it aside. Common mistake: leaving the power on can cause a short circuit when disconnecting wires.
- Disconnect the old battery: Locate the white connector joining the battery cable to the robot's main board. Gently pull the connector apart — do not pull the wires themselves. Lift the old battery out of the compartment. Checkpoint: if the connector feels stuck, use a small flathead screwdriver to gently pry it apart.
- Install the new battery: Place the new Li-polymer battery into the compartment with the connector facing the opening. Press the connector halves together until they click. Ensure the cable is not pinched under the battery. Common mistake: forcing the connector the wrong way can damage the pins. Align the notch on the plug with the slot on the socket.
- Close the compartment and test: Slide the battery cover back into place until it clicks shut. Power on the robot and check that it operates normally. Charge the battery fully before the first extended use. Checkpoint: if the robot does not power on, recheck the connector is fully seated and the battery is charged.
Product facts
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Rechargeable Li-polymer Battery for mBot Robot Kit: The Rechargeable Li-polymer Battery for mBot Robot Kit takes one hour to fully charge and lasts 2-5 hours in offline mode. This means you can quickly recharge between sessions and get a full class period of use from a single charge.
Rechargeable Li-polymer Battery for mBot Robot Kit