Bafang DPC18 Color Display

Assist runs from 0 to 9. Level 0 turns the motor off for plain pedalling, and the higher steps build up to full power, which gives fine control on long climbs where you want just enough help to keep the motor cool.

• Colour screen: 3.5 inches, easier to read than the small mono LCDs.
• Automatic backlight: brightness follows ambient light, day or night.
• USB port: a 5V output to charge a phone when it runs low on a long ride.
• IPX5 sealing: built to shrug off rain and spray from the front wheel.
• 5-pin waterproof plug: meets the display lead of the harness.

The screen itself carries no buttons you need to reach while riding. A separate handlebar button pad sits by the left grip, so your thumb changes assist without leaving the bar, and the screen can mount centrally by the stem where your eyes find it.

That split is a real advantage on a trail bike. The screen stays out of the way of a dropper remote or a shifter, and a crash that knocks the pad does not take the display with it.

The BBSHD display guide compares it with the C961, the 500C and the 850C.

Most BBSHD motors on the road are the classic UART type, with a 1T4 harness that splits into the display, throttle and brake leads. For those, the 5-pin DPC18 is a direct plug-in. When ordering the DPC18/C010 version, confirm the protocol option before checkout, because one name covers both. A CAN display that arrives for a UART bike is a return, not a fix.

1. Find the 1T4 harness and its 5-pin display lead.
2. If it is there, order the 5-pin UART version.
3. If your kit was sold as CAN bus, order the DPC18/C010 in its CAN form.

The CAN-bus kit page explains how that system handles displays and programming.

1. Switch off and unplug the battery.
2. Clamp the screen by the stem, tilted so it faces you in the riding position.
3. Fit the button pad inside the left grip, within reach of your thumb.
4. Route the lead along the bar and down the frame without tight bends.
5. Push the 5-pin plug into the harness with the arrows lined up; never force it.
6. Tuck spare lead length into a loose loop by the head tube so it cannot snag when the bars turn.

Look at the pins before connecting. New display stays dark? Look for a bent pin first; straightening one with a small screwdriver takes seconds.

Once powered, work through the display settings. On a UART system the display holds basics such as wheel size, units and the speed limit, while deeper motor settings such as current and launch live in the controller.

• Set the wheel size to match your tyre, or the speed reading drifts.
• Choose miles or kilometres.
• Pick how many assist steps you want within the 0–9 range, where the display offers it.

For controller settings on a UART HD, you still need a 5-pin programming cable and a laptop. Start with the values the programming guide flags first.

Bar space is the DPC18's main cost. A 3.5-inch screen needs a clear patch of bar by the stem, and on a narrow commuter cockpit already carrying a bell, lights and a phone mount, the smaller C961 may simply fit better.

A backup display earns its place on remote rides. If a crash cracks the main screen on a UART HD, the motor will not switch on without a display or a bypass plug, and a spare in the bag turns a long push into a quick swap.

• Pick the DPC18 for a big colour screen, nine assist levels and a phone charging port.
• Pick the C961 for a small, simple screen or a spare.
• Pick a 500C for colour in a compact size.

You need three things in place: a Bafang motor, the right protocol version and a harness with a free 5-pin display lead. Error codes read the same across Bafang displays, so the troubleshooting notes on the clutch and error codes page apply to all of them.