36V/48V 350W Brushless Motor Controller with PAS and Self-Learning

The 36V/48V 350W brushless motor controller is a universal BLDC controller built to drive three-phase brushless motors on electric bikes, electric scooters and other light electric vehicles. It generates three-phase current and spins a 3-phase motor from a 36V or 48V battery pack. Rated output is 350W, with a maximum phase current of 14A.

Compatibility is the strong point here. This controller runs motors with Hall sensors and motors without them, so it connects to a wide range of hub and mid-drive designs. It also includes a self-learning function that finds the correct phase and sensor wire combination on its own. As a result, you skip the slowest part of any controller swap.

The unit is aimed at builders, repair shops and riders who service their own machines. Home-built e-bikes, converted scooters and repaired drivetrains all fit its brief. E-bike owners get an extra benefit: pedal assist with three assistance levels. On a scooter that function simply stays unused, and the controller works exactly as before.

Key Benefits

• Dual voltage support – the same block runs in both 36V and 48V systems, so one part covers two battery formats.
• 350W rated motor power – the electronics are matched to 350W-class three-phase motors.
• 14A maximum phase current – the limit is set at the factory, so no extra tuning is required.
• Self-learning function – the controller identifies the phase wire order itself, so the motor turns in the correct direction.
• Sensorless operation – the motor still spins when the Hall sensor line is unused or has failed.
• 3-level pedal assist – the PAS system offers three assistance steps for electric bicycles.
• Compact 90 x 55 x 30 mm housing – it fits inside a frame triangle, a rear rack box or a scooter deck cavity.
• Broad vehicle coverage – suitable for e-bikes, e-scooters and other electric transport with a brushless motor.

Who Is This Controller For?

This controller suits electric bicycles, electric scooters and other electric vehicles that use a three-phase brushless motor. Two conditions matter most: a 36V or 48V battery, and a motor of roughly 350W. Within those limits, the fit is straightforward.

Both geared hub motors and mid-drive motors work here, provided they stay within the voltage and power range. Motors with Hall sensors are supported, and so are motors without any sensor line at all. For that reason, the unit is frequently chosen as a replacement part when an original controller burns out.

Home builders and self-repairers benefit the most. A home-assembled e-bike or a converted kick scooter both accept this block without special adapters. Electric bicycle owners gain the pedal assist system with its three speed levels, which riders with a pedal sensor will use daily.

Technical Specifications

Why Choose This Controller?

The first difference from fixed-voltage controllers is dual voltage support. One block covers a 36V system and a 48V system alike. Consequently, you do not need a separate model for each battery pack you own or plan to build.

The second difference is the dual operating mode. Many simple controllers demand Hall sensors and refuse to spin without them, while this one runs either way. In addition, the self-learning function replaces manual phase wire matching. That step normally takes the longest during an installation, so the time saving is real.

The third difference is size. At only 90 x 55 x 30 mm, the housing goes where a larger block will not. Compact scooters and narrow bicycle frames are the obvious examples, and the small footprint keeps wiring runs tidy.

Frequently Asked Questions

Is this controller suitable for an electric scooter?

• Yes, it is designed for e-scooters, e-bikes and other electric vehicles.
• The scooter motor must be a three-phase brushless type.
• The battery system must be 36V or 48V.

Will it work on an electric bike?

• Yes, electric bicycles are a primary application.
• It drives both hub motors and mid-drive motors within the stated limits.
• The 3-level pedal assist system is available for bikes with a pedal sensor.

Does the motor need Hall sensors?

• No, the controller operates with sensors and without them.
• A failed or unused sensor line will not stop the motor from spinning.
• This makes it a practical replacement for a variety of motor designs.

What does the self-learning function do?

• It selects the correct combination of phase and sensor wires automatically.
• The motor then turns in the right direction without manual matching.
• No specialist programming tool is needed for this step.

Can I use it on both a 36V and a 48V battery?

• Yes, the same unit supports 36V and 48V systems.
• No separate model is required for each voltage.
• Keep the motor within the 350W power class.

How many pedal assist levels are there?

• The PAS system provides three assistance levels.
• The function applies to electric bicycles with a pedalling sensor.
• On scooters the feature simply remains unused.

Will it fit inside a compact scooter deck?

• The housing measures 90 x 55 x 30 mm.
• It fits a scooter deck cavity, a frame triangle or a rack box.
• Narrow bicycle frames are a common mounting spot.

What is the maximum phase current?

• The maximum phase current is 14A.
• The limit is factory set, so no adjustment is needed.
• Pair it with a 350W-class three-phase motor.

With dual 36V and 48V support, sensored and sensorless operation, automatic phase learning and a three-level pedal assist input, this 350W controller covers most light electric vehicle repairs and builds. Its 90 x 55 x 30 mm housing keeps installation simple even in tight frames and decks.