Quick answer

Most JT18 eTrike issues—like battery not charging or motor cutting out—have simple fixes you can do at home. Start with the diagnosis steps below before calling for service.

Why this trike is different

The Jasion JT18 eTrike uses a rear differential, which lets the two rear wheels spin at different speeds when turning. That's great for stability, but it also means some troubleshooting steps differ from a standard two-wheel ebike.

Many problems come from loose connections or user error, not mechanical failure. Always check the simplest causes first.

Diagnosis and fixes

  • Battery not charging: Check the charger connection and outlet first. If the charger light stays green, the battery may be fully charged or the BMS is in protection mode. Try pressing the battery power button for 5 seconds to reset. If the battery still won't charge after reset, it may need replacement.
  • Motor cuts out while riding: Inspect all wiring harness connectors—especially near the rear axle and handlebars. A loose or corroded connection is the most common cause. Clean and reseat each connector. If the motor still cuts out, test with a different battery if available; otherwise, contact support.
  • Brakes squeak or drag: Mechanical disc brakes can loosen over time. Use a 5mm Allen key to adjust the caliper alignment. Also check if the parking lock is engaged—it's easy to leave on accidentally. If adjusting doesn't stop the noise, the pads may be worn and need replacement.
  • Trike wobbles or pulls to one side: Check tire pressure first—uneven pressure between the two rear tires is common. Also inspect the rear differential for debris or damage. Tighten any loose axle nuts. If wobbling persists after balancing tires, have the differential inspected by a mechanic.

  • JT18 eTrike: The JT18 eTrike features a rear differential, front suspension, 18x3-inch tires, and mechanical disc brakes with a parking lock. The differential affects how the trike handles turns and can be a source of noise or resistance if not maintained.

    JT18 eTrike

    JT18 eTrike