Onewheel XR Battery & BMS Replacement

Difficulty: Moderate

Steps: 10 – 11

Time Required: 1 – 1½ hours

Introduction

If you’re not getting the range you once did from your Onewheel XR and a 72 hour balance charge hasn’t made things any better, use this guide to help you swap your battery and regain your freedom!

For your safety, power off your Onewheel XR prior to disassembly. This reduces the risk of electrical malfunctions and/or damage during the replacement process.

Note: Altering or damaging any component of your Onewheel XR during disassembly/reassembly may render your existing warranty void or lead to refusal of non-warranty service at the discretion of Future Motion, Inc. (the creators of Onewheel).

Step 1 Remove the bottom bumper screws

Caution: Make sure your old battery is discharged to 25% or less prior to removing it. A charged lithium-ion battery can present a fire or explosion hazard if punctured.
Remove all twelve (12) screws using a 1/8″ hex bit.
Note: Keep screws organized as they are easy to mix up and/or lose.

Step 2 Remove the top footpad screws and footpads

Remove all four (4) screws using a 1/8″ hex bit.
Caution: For the front footpad sensor connector, turn (counter-clockwise) only the smaller part of the connector closest to the controller. Turning the entire body of the connector can damage it or your controller.
Note: If you are unable to remove the footpad sensor connector using your fingers, you may use a Future Motion™ footpad connector wrench or a pair of long nose pliers (be gentle).

Step 3 Remove the top bumper screws and bumpers

Remove all four (4) screws using a 1/8″ hex bit.
To remove the front bumper, pull it toward the nose of the Onewheel™. DO NOT pull it straight down.
You should also remove the cable compartment cover at this time.

Step 4 Loosen the hub bolts

Loosen all four (4) hub bolts using a 1/4″ hex bit.
Note: Loosen the hub bolts only until they are flush with the outer face of the rails. DO NOT fully remove them.

Step 5 Remove the wiring harness t-plate and retaining clip screws

Remove all four (4) screws using a #1 Phillips bit.
Note: DO NOT remove the screws on the motor cable side.

Step 6 Remove the battery enclosure retaining screws

Remove the two (2) screws at the rear of the underside of the rails using a 1/8″ hex bit.
Note: If you are removing these screws for the first time, they will be located under the warranty void stickers.
WARNING: Removing these screws may render your warranty void at the discretion of Future Motion, Inc.
Remove the battery enclosure and harness by pulling it toward the rear end of the rails.
Caution: Be extremely careful not to damage the wiring harness while removing it from the rail and axle carrier. The wiring harness will need to be gently manipulated in order to allow removal.

Step 7 Remove the battery enclosure screws and battery enclosure lid

Remove the five (5) screws at the rear of the battery enclosure using a #1 Phillips bit.
Remove the ten (10) remaining screws using a 3/32″ hex bit.

Step 8 Disconnect the battery balance connector

Remove the connector by pinching the tab and gently pulling upward.
Caution: It is extremely important that the battery be disconnected in this order to avoid causing damage to your Onewheel™ Battery or BMS.

Step 9 Disconnect the battery XT60 connector

Note: Remove only the XT60 connector on the left side of the BMS (the one attached to the battery).

If you need to remove your Battery, proceed to Step 10 (Battery).

If you need to remove your BMS, proceed to Step 10 (BMS).

Step 10 (Battery) Remove the battery

Remove the battery by gently lifting up on the side closest to the connectors.
Caution: DO NOT use sharp tools to pry the battery from the enclosure as a puncture can present a fire or explosion hazard.

Step 10 (BMS) Disconnect the wiring harness XT60 and data connectors

Note: The wiring harness XT60 and data connectors can be removed in any order.
Caution: When removing the wiring harness XT60 connector, be extremely careful not to hit/damage the small ceramic capacitors directly to the right of the connector.

Step 11 (BMS) Remove the BMS

Remove the BMS by gently lifting up on it.
Caution: The BMS is sensitive to static electricity and should be handled with extreme care. If you need to store it, an anti-static bag is highly recommended.