If your Xhorse Dolphin XP-005 or Dolphin XP-005L battery requires BMS service, you may not need to replace the entire battery assembly. The updated XP5BA1GL replacement battery features a metal housing that makes internal components more accessible for service and replacement.
One of those components is the Battery Management System (BMS) board. On this updated metal-cased battery design, the BMS board can be replaced separately instead of replacing the complete battery assembly when the issue is isolated to the board.
In this step-by-step guide, Oscar from the Locksmith Keyless Repair Center walks through how to remove and replace the BMS board on the updated XP5BA1GL battery used with the Xhorse Dolphin XP-005 and XP-005L key cutting machines.
What Does the BMS Board Do?
The Battery Management System (BMS) is an important part of a lithium battery pack. It helps manage and monitor battery operation and provides protection related to charging, discharging, and electrical conditions.
If a battery-related problem is traced specifically to the BMS board, replacing the board may allow the battery assembly to be serviced without replacing the entire pack. However, battery problems can have multiple causes, so proper diagnosis is important before replacing components.
Tools & Materials Needed
Before beginning the repair, make sure you have the following items available:
- Xhorse Dolphin XP-005 / XP-005L Replacement Battery – updated metal housing version, Part # XP5BA1GL
- Replacement BMS Board
- Xhorse Hex Key / Allen Wrench
Safety First: Disconnect the battery module completely from the Dolphin key cutting machine and charger before beginning. Lithium battery packs can present electrical and fire hazards if handled incorrectly. Work on a clean, dry, non-conductive surface and avoid shorting the battery terminals or wiring.
Step 1: Remove the Outer Metal Backplate
Place the battery module on a clean, stable work surface with the metal backplate facing upward.
Using the appropriate Xhorse hex key, remove the 8 hex screws around the perimeter of the backplate. Once all eight screws have been removed, carefully lift the metal cover away from the battery housing.
With the cover removed, you will see two primary sections inside the housing:
- Battery Cell Pack: Located on one side of the housing.
- BMS Board Assembly: Located on the opposite side and secured to the chassis with retaining screws and electrical connections.
Step 2: Disconnect and Remove the Existing BMS Board
With the battery housing open, locate the BMS board. Before removing it, carefully disconnect the electrical connections and remove the hardware securing the board.
- Disconnect the terminals: Carefully unplug the two main wiring terminals connected to the BMS board.
- Remove the mounting screws: Remove the two retaining screws securing the BMS board to the battery chassis.
- Remove the board: Carefully lift the existing BMS board out of the housing without damaging the surrounding wiring or battery cells.
Take care not to short the battery terminals or damage any wiring while working inside the housing.
Step 3: Install the New BMS Board
Once the original BMS board has been removed, install the replacement board in the same position.
- Position the new board: Place the replacement BMS board into the housing and align the mounting points and electrical connections.
- Secure the board: Reinstall the two mounting screws and tighten them securely without overtightening.
- Reconnect the terminals: Reconnect the two electrical terminals to their corresponding connections. Make sure each connection is fully seated.
Before closing the housing, inspect the wiring and confirm that no cables are trapped beneath the board or cover.
Step 4: Reassemble the Battery Housing
- Place the metal backplate onto the battery housing and align all screw holes.
- Check that no internal wires are being pinched between the cover and the housing.
- Reinstall the 8 hex screws and tighten them evenly.
Do not force the cover into position. If the screw holes do not align naturally, remove the cover and check the internal components and wiring placement before tightening the screws.
Step 5: Test the Xhorse Dolphin Battery
After the battery has been fully reassembled, reinstall it in the Xhorse Dolphin XP-005 or XP-005L.
Power on the machine and connect the charger. Confirm that the battery is recognized correctly and that the machine displays the expected charging and battery status.
If the battery does not charge, is not recognized, or displays an abnormal status after the BMS replacement, disconnect it and inspect the connections before continuing to use the battery. If the connections are correct and the issue continues, additional diagnosis may be necessary because the BMS board may not be the source of the battery problem.
Frequently Asked Questions
Can you replace the BMS board on an Xhorse Dolphin XP-005 battery?
Yes, the BMS board can be replaced separately on the updated XP5BA1GL metal-housing battery covered in this guide. Always verify the battery version and replacement part compatibility before beginning the repair.
Does this BMS replacement apply to both the XP-005 and XP-005L?
This guide covers the updated XP5BA1GL battery used with the Xhorse Dolphin XP-005 and XP-005L. Verify the part number and battery design before ordering replacement components or beginning service.
Do I need to replace the entire Xhorse Dolphin battery if the BMS board fails?
Not necessarily. On the updated metal-cased XP5BA1GL battery design, the BMS board is accessible and can be replaced separately when the problem has been properly diagnosed as a BMS-related issue.
What should I do if the battery still does not work after replacing the BMS board?
First, disconnect the battery and verify that the electrical terminals are correctly connected and fully seated. If the battery still does not charge or operate normally, the problem may involve another component and require additional diagnosis.
Keep Your Xhorse Dolphin Ready for the Next Job
For mobile locksmiths and busy shops, keeping your key cutting equipment operational is essential. The serviceable design of the updated XP5BA1GL battery gives technicians the ability to address certain BMS-related issues without automatically replacing the complete battery assembly.
Locksmith Keyless carries Xhorse key cutting machines, replacement batteries, parts, and accessories for professional locksmiths. Whether you're maintaining an XP-005, XP-005L, or other Xhorse equipment, having the right replacement parts can help keep your tools ready for daily work.
Explore Xhorse Products at Locksmith Keyless.
