48V 45A E-Bike Controller
Description
eBike Controller 48V–72V 45A – 3-Mode Sine Wave with Self-Learning for 1500W–3000W Brushless Motors
Intelligent sine wave controller with 15 MOSFETs, 3 operating modes (Hall / non-Hall / self-learning) and multi-voltage compatibility: 48V/52V/60V/72V. Designed for 1500W–3000W brushless gearless motors, it delivers smooth, quiet power transfer with full protection — including regenerative braking at 48V/52V.
The key difference of this controller over standard square wave versions is its 3-mode sine wave technology: Hall mode (pure sine wave, quiet and efficient), non-Hall mode (automatic switch-over if Hall sensors fail) and self-learning mode (automatically identifies the correct motor phase combination). At 45A maximum current and 48V/52V/60V/72V compatibility, it is the natural choice for the 1500W and 2000W kits in the All4eBikes range.
Technical Specifications — 45A 48V–72V Controller
Electrical Parameters
Operating Modes
Supported Connections
Why 3 operating modes matter in practice
Single-mode controllers have one critical vulnerability: if the motor's Hall sensors fail, the motor stops completely. This controller runs across 3 independent modes. Mode 1 (Hall + sine wave) delivers the smoothest start-up and lowest noise. Mode 2 (non-Hall + square wave) kicks in automatically if the Hall sensors develop a fault — the motor keeps running without interruption. Mode 3 (self-learning) identifies and stores the correct motor phase order in 30 seconds, eliminating the most common installation error.
Regenerative braking — energy recovery at 48V/52V
At 48V and 52V, the controller supports regenerative braking in 4 configurable levels (off, weak, standard, strong). Regenerative braking converts kinetic energy back into electricity during braking, extending battery range by 5–15% depending on terrain and riding style. This function is not available at 60V/72V on this controller version.
Integrated protections
Complete protection included: overvoltage, undervoltage, overcurrent, overload, overheating, motor lock and anti-runaway. The black anodised aluminium casing acts as a passive heatsink. Operating temperature: −40°C to +80°C.
Which Kits It's Recommended For
1500W MTX Kit
A direct replacement or sine wave upgrade for the 35A controller in the 1500W MTX conversion kit. Delivers 10A extra headroom and 3-mode operation.
2000W MTX Kit
Compatible with the 2000W MTX conversion kit — same 45A current rating as the kit's native controller, with the added benefit of sine wave and regenerative braking at 48V/52V.
Custom DIY Builds 1500W–2000W
Ideal for DIY builders assembling a custom e-bike with a 1500W or 2000W hub motor who want sine wave without stepping up to 60A.
Recommended Batteries
At 45A maximum current, the battery must have a BMS rated for at least 40A continuous discharge. Our recommendations:
48V 22.5Ah Downtube Battery
The balanced option for 48V systems with active regenerative braking — 40A BMS, 60–90 km range. View the 48V 22.5Ah battery.
52V 20Ah Triangle Battery
The optimal voltage for maximum performance — weight centred in the frame, built-in LCD display, 45A BMS. View the 52V 20Ah Triangle battery.
Installation and Wiring
Installation Steps
- Connect the motor phase wires (3 wires) to the controller outputs
- Connect the Hall sensor connectors from the motor
- Connect the battery — observe polarity
- Connect the display, throttle, PAS sensor and brake sensors
- Run the self-learning procedure with the wheel lifted before first use
Safety and Maintenance
- Do not cover the casing — passive thermal dissipation requires airflow
- Periodically check phase connector tightness
- Never exceed the BMS discharge limit of the associated battery
- Operating temperature: −40°C to +80°C
