The Heybike Mars 3.0 features a removable battery and multiple startup methods, giving riders convenient access at home and on the go.
This guide explains how to unlock, remove, and reinstall the Mars 3.0 battery. It also shows how to start the bike using the included NFC card or the display passcode.
For more information about the bike, visit the Heybike Mars 3.0 product page.
Before You Begin
Before unlocking or removing the battery:
- Turn off the bike.
- Disconnect the charger.
- Park the bike on a flat, stable surface.
- Keep your fingers away from the frame hinge.
- Support the battery when removing or reinstalling it.
- Keep the battery key and NFC cards in a secure place.
Do not force the key, folding mechanism, or battery. If something does not move smoothly, stop and check the alignment before continuing.
Part 1: Unlock the Mars 3.0 Battery
Step 1: Insert the Battery Key
Insert the battery key fully into the battery lock.
Make sure the key is completely inserted before attempting to turn it.
Step 2: Press and Turn the Key
Press the key inward while turning it to the left.
Continue until the battery release button retracts into the frame. This indicates that the battery lock has been released.
Do not force the key. If it does not turn easily, check that it is fully inserted and pressed inward.
Part 2: Open the Frame and Remove the Battery
Step 1: Release the Folding Handle
Push the locking clasp forward with your thumb while pulling the folding handle outward.
These two actions should be performed at the same time.
Step 2: Fold the Frame
Carefully fold the frame inward toward the center of the bike until it is fully folded.
Keep your fingers away from the hinge while folding the frame.
Step 3: Remove the Key
Once the frame is fully folded and the battery lock has been released, remove the battery key.
Step 4: Slide Out the Battery
Hold the battery carrying handle and support the battery with your other hand.
Slide the battery straight forward, keeping it parallel to the frame, until it is completely removed.
Do not lift, twist, or pull the battery sideways.
Part 3: Reinstall and Lock the Battery
Before reinstalling the battery, check that the battery compartment and guide rails are clear of dirt or other objects.
Step 1: Align the Battery
Align the groove on the bottom of the battery with the guide inside the frame.
Correct alignment allows the battery to slide into the frame smoothly.
Step 2: Insert the Battery
Gently slide the battery straight into the frame until it is fully seated.
Do not force the battery. If it does not slide in smoothly, remove it and check the alignment again.
Step 3: Lock the Battery
Insert the key and turn it back to the locked position.
Remove the key after confirming that the battery is securely locked.
Step 4: Secure the Folding Mechanism
Unfold the frame and return it to the riding position.
Close the folding handle completely and confirm that the locking clasp is fully engaged.
Before riding, gently check that the battery does not move and that the folding mechanism is securely closed.
Part 4: Start the Mars 3.0 With an NFC Card
The Mars 3.0 includes NFC cards for quick startup.
Hold one of the included NFC cards against the lower half of the display.
Wait for the Heybike startup screen to appear. When the normal riding interface is displayed, the bike is powered on and ready to use.
For the most reliable response, hold the card flat and close to the display while tapping.
Part 5: Start the Mars 3.0 With the Display Passcode
You can also start the Mars 3.0 by entering a passcode on the display.
Step 1: Turn On the Display
Press and hold the center power button for more than two seconds.
The passcode entry screen will appear.
Step 2: Enter the Passcode
The default startup passcode is 0000, unless it has previously been changed.
- Use the up and down buttons to select a number.
- Press the center button to confirm the number and move to the next digit.
- Repeat the process until all four digits have been entered.
Step 3: Confirm Startup
After the correct passcode is entered, the normal riding interface will appear.
The bike is now powered on and ready to use.
If no action is taken on the passcode screen for approximately 10 seconds, the display may turn off. Press and hold the center power button again to restart the process.
How to Turn Off the Mars 3.0
To turn off the bike, press and hold the center power button for more than two seconds.
Always turn off the bike before removing the battery, charging it, transporting it, or storing it.
Troubleshooting
The Battery Key Will Not Turn
Make sure the key is fully inserted. Press the key inward before turning it to the left.
Do not force the key. Release the pressure, reposition it, and try again.
The Folding Handle Will Not Open
Push the locking clasp forward while pulling the folding handle outward. Both actions must be performed at the same time.
The Battery Will Not Slide Out
Confirm that:
- The battery release button has retracted.
- The frame is fully folded.
- The key has been removed.
- The battery is being pulled straight forward and parallel to the frame.
Do not pull the battery upward or sideways.
The Battery Will Not Slide Back Into the Frame
Check that the groove on the bottom of the battery is aligned with the guide inside the frame.
Remove any dirt or objects from the battery compartment before trying again.
The NFC Card Is Not Recognized
Hold the NFC card against the lower half of the display and keep it flat against the screen briefly.
If the card is still not recognized, use the display passcode to start the bike.
The Default Passcode Does Not Work
The default passcode is 0000. If it does not work, the passcode may previously have been changed.
Contact Heybike Support if you no longer know the current passcode.
Watch the Video Guide
The video below demonstrates how to unlock the battery, release the folding latch, and start the bike using the NFC card or display passcode.
For the complete battery removal and reinstallation process, follow the written steps above.
Ready to Ride
Before every ride, confirm that:
- The battery is fully inserted and locked.
- The folding handle is completely closed.
- The locking clasp is securely engaged.
- The display starts normally.
Unlock. Tap. Ride.
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