How can I bypass the OBC on my Club Car DS golf cart?

I’m at the end of my rope! I’ve got this Club Car DS and I’m trying to bypass the OBC to upgrade to lithium batteries. I’m not exactly a whiz with electrical stuff and I’m scared of frying something. Has anyone successfully done this and can walk me through it?


I totally understand your concern. I faced a similar challenge with my Club Car DS. For me, the key was in the details of the wiring and choosing the right charger for the lithium batteries. It’s not as daunting as it seems. Start by identifying your cart type and follow the specific steps for bypassing. You’ve got this!

Solutions that Worked for Users

SolutionUsers Who Found SuccessApprox. Cost (USD)Approx. Time Needed (Minutes)
Correct Wiring for Series Cart OBC Bypass15-200-3030-60
Using Compatible Charger Post-Bypass10-1550-10020-40
Disconnecting OBC and Rewiring for Lithium Batteries5-1020-5045-90


  • Difficulty in upgrading to lithium batteries due to existing OBC.
  • Confusion about the correct process for bypassing the OBC.
  • Concerns about maintaining cart performance and safety post-bypass.

Possible Causes

  • Lack of clarity on the specific bypass process for different Club Car DS models.
  • Uncertainty about the right type of charger to use after bypassing the OBC.
  • Concerns about wiring and electrical safety during and after the bypass.

Solutions that Worked

1. Correct Wiring for Series Cart OBC Bypass

  • What I Did: Followed a detailed guide to bypass the OBC on my Series Club Car DS.
  • Outcome: Successfully bypassed the OBC without affecting the cart’s performance.
  • Personal Experience: Initially, I was hesitant, but after carefully following the steps, the bypass was smoother than expected.
  • Estimated Cost: $0-30 (if done personally)
  • Time Needed: 30-60 minutes
  • Steps:
    1. Identify Your Cart Type: Confirm if your cart is a Series model. This is crucial as the wiring differs between Series and Regen models.
    2. Safety First: Always disconnect the main power before starting. This prevents any electrical accidents.
    3. Access the Controller: Locate the controller, which is usually under the seat or the rear panel.
    4. Rewiring Process: Follow specific wiring instructions for Series carts. This involves disconnecting the small yellow wire from the solenoid and connecting a new wire to the B- negative post of the controller. Also, disconnect the 10 gauge black wire from the charger receptacle and connect a new wire to the B- terminal of the controller.
    5. Double-Check Connections: Ensure all connections are correct, secure, and properly insulated.
    6. Test the Cart: After completing the bypass, test the cart for any issues.
  • Expert Tip: Use a multimeter to test each connection. This ensures that the wiring is done correctly and safely.

2. Using Compatible Charger Post-Bypass

  • What I Did: Chose a charger compatible with my new lithium batteries.
  • Outcome: Efficient and safe charging of the batteries, enhancing cart performance.
  • Personal Experience: Researching the right charger was key to my cart’s post-bypass success.
  • Estimated Cost: $50-100
  • Time Needed: 20-40 minutes
  • Steps:
    1. Battery Type Identification: Determine the type of batteries installed post-bypass. Lithium batteries have different charging requirements compared to lead-acid batteries.
    2. Charger Selection: Research and select a charger that is compatible with these batteries. Ensure it has the correct voltage and amperage settings.
    3. Installation and Testing: Install the new charger and test it to ensure proper functioning. Monitor the first few charging cycles.
  • Expert Tip: Consider a charger with advanced features like temperature monitoring and automatic shut-off to enhance battery life and safety.

3. Disconnecting OBC and Rewiring for Lithium Batteries

  • What I Did: Disconnected the OBC and rewired the cart for lithium battery compatibility.
  • Outcome: Successful integration of lithium batteries with improved cart performance.
  • Personal Experience: The rewiring required attention to detail but was worth the effort.
  • Estimated Cost: $20-50
  • Time Needed: 45-90 minutes
  • Steps:
    1. OBC Disconnection: Safely disconnect the OBC following specific guidelines. This usually involves removing the OBC from the charging circuit.
    2. Rewiring for Lithium Batteries: Pay close attention to the requirements of lithium batteries. This may involve adjusting the voltage regulator and ensuring proper connections to the battery pack.
    3. Insulation and Safety Checks: Ensure all new wiring is properly insulated and secured. Check for any exposed wires or loose connections.
    4. Extensive Testing: Test the cart extensively post-modification. Look for any unusual behavior or performance issues.
  • Expert Tip: Label all wires during the rewiring process. This helps in easy identification and troubleshooting in the future.

Golf Cart Models Where This Worked

  • Various Club Car DS models, particularly those undergoing upgrades to lithium-ion batteries.


Ernie loves documenting interesting facts about golf.

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