The Hobbywing QUICRUN WP 10BL120 G2 is a 120A waterproof brushless ESC developed for suitable 1/10 scale monster trucks and short course trucks. It supports 2S, 3S and 4S LiPo power systems and is designed for demanding recreational setups using suitable 3660 or 4268-size brushless motors.
Intelligent freewheeling technology improves partial-throttle efficiency and helps control operating temperature, while the integrated fan-cooled heat sink supports more stable performance under sustained load. A powerful selectable 6V/7.4V switch-mode BEC provides 5A continuous output and up to 10A instantaneous current for compatible steering electronics.
This is a sensorless brushless ESC. A sensored brushless motor may be connected, but it will operate in sensorless mode because the ESC does not use the motor sensor cable. The ESC includes an XT60 battery connector and three 4.0mm female motor connectors.
Quick Fit Check
Vehicle: Designed for suitable 1/10 scale monster trucks and short course trucks. Scale alone does not guarantee compatibility, so vehicle weight, tire size and gearing must also be considered.
Battery: Supports 2-4S LiPo batteries and includes a pre-installed XT60 battery connector.
Motor: Official guidance lists a 3660-size motor up to 4000KV on 3S and a 4268-size motor up to 2600KV on 4S.
Motor Connection: Three 4.0mm female bullet connectors are pre-installed. Sensored brushless motors operate in sensorless mode only.
BEC: Selectable 6V or 7.4V switch-mode output, rated at 5A continuous and up to 10A instantaneous current.
7.4V BEC on 2S: The ESC cannot maintain a stable full 7.4V BEC output from a 2S LiPo. Use the 7.4V setting with 3S or 4S power when compatible high-voltage electronics require it.
Product Specifications
| Product Name |
Hobbywing QUICRUN WP 10BL120 G2 |
| Product Number |
30107200 |
| ESC Type |
Waterproof sensorless brushless electronic speed controller |
| Vehicle Scale |
1/10 scale |
| Continuous / Peak Current |
120A / 760A |
| Battery Input |
2-4S LiPo |
| BEC Output |
Selectable 6V/7.4V switch-mode BEC, 5A continuous, up to 10A instantaneous output |
| Supported Motor Type |
Sensorless brushless motors; sensored brushless motors operating in sensorless mode |
| Recommended Motor on 3S |
3660-size motor, KV ≤ 4000 |
| Recommended Motor on 4S |
4268-size motor, KV ≤ 2600 |
| Applications |
Suitable 1/10 monster trucks and short course trucks |
| Battery Connector |
XT60 |
| Motor Connectors |
4.0mm female gold bullet connectors × 3 |
| Input Wires |
12AWG, 150mm, red × 1 and black × 1 |
| Cooling Fan |
25 × 25 × 10mm framed fan, supports 5-7.4V, powered by the built-in BEC |
| Programming Methods |
LED Program Box, LCD G2 Program Box and LCD Program Box Pro |
| SET Button Functions |
Throttle calibration and factory reset; not used for full parameter programming |
| Programming Port |
Independent programming port |
| OTA / WiFi Programming |
Not supported |
| Online Firmware Update |
Not supported |
| Dimensions |
52.8 × 39.8 × 38.2mm (L × W × H) |
| Weight |
119g including wires and connectors |
Why Choose the QUICRUN WP 10BL120 G2?
120A Brushless Power
Delivers 120A continuous and 760A peak current for suitable 1/10 truck power systems.
2-4S LiPo Support
Supports a wide range of voltage setups, from manageable 2S builds to suitable 4S truck systems.
Powerful 5A BEC
Selectable 6V/7.4V output supports compatible standard and high-voltage steering electronics.
Intelligent Freewheeling
Improves partial-throttle efficiency and helps reduce ESC operating temperature.
Active Fan Cooling
An integrated heat sink, internal copper thermal path and cooling fan improve heat dissipation.
Capacitor Protection
Capacitor overheat protection provides an additional safeguard during excessive thermal load.
IP67-Rated Protection
Designed for normal RC use around water, mud, dust and sand.
Independent Program Port
Connect a compatible program box without removing the throttle cable from the receiver.
Intelligent Freewheeling for Greater Efficiency
The QUICRUN WP 10BL120 G2 uses intelligent freewheeling technology to improve electrical efficiency during partial-throttle operation. Reducing unnecessary electrical loss helps the ESC operate at a lower temperature and maintain more consistent performance during longer driving sessions.
Freewheeling technology does not correct an overloaded power system. Motor KV, gearing, tire diameter, vehicle weight, drivetrain resistance, battery voltage and driving style must still be matched correctly.
Choosing a 2S, 3S or 4S Setup
| Battery |
Official Motor Guidance |
Typical Direction |
Important Check |
| 2S LiPo |
Supported, but the manual does not publish a separate 2S motor-KV limit |
Lower-voltage setup with softer power delivery |
Select the motor according to its own voltage rating, vehicle load, gearing and temperature. |
| 3S LiPo |
3660-size motor, KV ≤ 4000 |
Responsive 1/10 truck power system |
Monitor tire diameter, gearing, motor temperature and overall vehicle weight. |
| 4S LiPo |
4268-size motor, KV ≤ 2600 |
High-output truck setup using a motor specifically rated for 4S |
Do not move a high-KV 3S motor directly into a 4S power system. |
Powerful 6V/7.4V Switch-Mode BEC
The built-in BEC provides 5A continuous output and up to 10A instantaneous current. Its output voltage can be switched between 6V and 7.4V to support different steering-servo and receiver requirements.
6V BEC Setting
Use for standard-voltage receivers, steering servos and accessories that are not rated for direct 7.4V input.
7.4V BEC Setting
Use only when every receiver-powered component supports high-voltage operation.
Important for 2S users: when the ESC is powered by a 2S LiPo and the BEC is set to 7.4V, the BEC cannot maintain a stable full 7.4V output. Hobbywing recommends using the 7.4V setting with 3S LiPo or above.
Never set the BEC voltage above the maximum operating voltage of the receiver, steering servo or connected accessories.
Efficient Cooling System
The ESC combines an integrated heat-sink structure, an internal copper thermal path and a 25 × 25 × 10mm cooling fan. Heat is conducted from the internal power board toward the external radiator, while the fan provides active airflow over the assembly.
The fan is powered by the built-in BEC and supports a 5-7.4V operating range. Keep the fan clear of receiver wires, body panels and debris, and inspect it after use in sandy or muddy environments.
Fan cooling improves heat management, but it does not make an overloaded motor or gearing combination safe. Repeated thermal protection means the vehicle load, gearing or motor selection should be reviewed.
Capacitor Thermal Protection
The QUICRUN WP 10BL120 G2 includes capacitor thermal protection in addition to battery low-voltage, ESC overheat, throttle-signal-loss and current protection.
If excessive capacitor temperature is detected, the ESC enters protection and indicates the condition with a repeating five-flash green LED sequence. Stop the vehicle, allow the system to cool and inspect the battery, gearing, motor load, wiring and fan operation before continuing.
Protection is an emergency safeguard rather than a substitute for correct setup. Repeated activation indicates that the electrical or thermal load should be reduced.
Built-In 1640µF Capacitor
The supplied product material identifies a built-in capacitor capacity of up to 1640µF. Integrating the capacitors into the ESC housing simplifies installation and reduces the number of separate components that must be positioned on a typical 1/10 chassis.
This should not be interpreted as permission to use excessively long battery wires or an unsupported electrical layout. Keep the battery leads close to the original length and follow the installation limits in the manual.
IP67-Rated Protection
The sealed ESC design carries an IP67 protection rating under normal operating conditions. It is designed to resist common RC exposure involving rain, splashes, mud, dust and sand.
IP67 does not mean the ESC should remain underwater. Do not intentionally submerge it for extended periods. After wet or muddy use, disconnect the battery, remove debris and allow the electronics to dry completely before storage.
Water and dust resistance are not permanent. Impact damage, worn seals, damaged wires and normal aging can reduce protection over time. The cooling fan also requires inspection and cleaning after dirty use.
Independent Programming Port
A compatible program box connects to the ESC through its independent programming port. The receiver throttle cable can remain connected while the ESC parameters are being changed.
The LED Program Box, discontinued LCD G2 Program Box and current LCD Program Box Pro are listed as supported programming tools. OTA programming, WiFi Express programming and online firmware updating are not supported.
SET button note: the onboard SET button is used for throttle-range calibration and factory reset. Full parameter programming is completed through a compatible program box connected to the independent programming port.
Adjustable ESC Parameters
Available programmable settings include:
- Running mode
- Low-voltage cutoff
- Punch level
- Drag brake force
- Maximum brake force
- Maximum reverse force
- Neutral range
- Motor timing
- LiPo cell count
- BEC output voltage
Available Running Modes
| Mode |
Operation |
Typical Use |
| Forward with Brake |
Forward drive and proportional braking only |
Racing or applications where reverse is not required |
| Forward/Reverse with Brake |
The first reverse command applies braking before reverse becomes available |
General bashing and everyday truck use |
| Forward with Reverse |
Reverse responds directly when commanded |
Special vehicle setups requiring direct reverse response |
Throttle Calibration and Protection Status
Throttle-range calibration should be completed when the ESC is first installed, when the transmitter is replaced or when throttle trim, travel or endpoint settings are changed.
The ESC LEDs indicate operating and protection conditions:
- A repeating single red flash indicates low-voltage protection.
- A repeating single green flash indicates ESC overheat protection.
- Three repeating green flashes indicate current protection.
- Five repeating green flashes indicate capacitor overheat protection.
If protection is triggered, stop the vehicle and inspect battery voltage, gearing, motor load, drivetrain resistance, wiring, fan operation and system temperature before continuing.
Download the Hobbywing QUICRUN WP 10BL120 G2 manual
Frequently Asked Questions
Can the QUICRUN WP 10BL120 G2 run on 4S LiPo?
Yes. The ESC supports 2-4S LiPo. For 4S operation, Hobbywing recommends a suitable 4268-size brushless motor no higher than 2600KV.
What motor should I use on 3S?
The official guidance lists a suitable 3660-size brushless motor up to 4000KV on 3S. Vehicle weight, tire size and gearing must still be considered.
Does Hobbywing provide a 2S motor-KV limit?
The manual confirms that 2S LiPo is supported but does not publish a separate 2S motor-KV limit. Select the motor according to its voltage rating, vehicle load, gearing and operating temperature.
Can it run a sensored brushless motor?
A sensored brushless motor may be connected, but it will operate in sensorless mode because the ESC does not use the motor sensor cable.
Can I use the 7.4V BEC setting with a 2S battery?
The setting is available, but the BEC cannot maintain a stable full 7.4V output from a 2S LiPo. Use 3S or 4S power when a compatible high-voltage servo requires stable 7.4V BEC output.
Does the ESC include capacitor overheat protection?
Yes. Five repeating green LED flashes indicate capacitor overheat protection. Stop the vehicle and allow the power system to cool before investigating the cause.
Can I program the ESC with the SET button?
The SET button is used for throttle calibration and factory reset. Full parameter programming requires a compatible programming box connected to the independent programming port.
Does IP67 mean the ESC can remain underwater?
No. IP67 provides protection under normal operating conditions, but prolonged submersion should be avoided. Water and dust resistance may also decrease through wear, impact damage and aging.
Important Installation Notes
- Confirm battery polarity before connecting power. Reverse polarity can permanently damage the ESC.
- Use properly soldered and insulated connections to prevent high-resistance joints and short circuits.
- Keep the cooling fan clear of wires, body panels, sand and debris.
- Do not power the receiver from a second source while the ESC BEC red wire remains connected.
- Calibrate the throttle range before the first run.
- Disconnect the battery after use to prevent gradual over-discharge.
- Reduce gearing or load if thermal or current protection repeatedly activates.
Explore More Hobbywing QUICRUN ESCs
Compare this 120A 2-4S brushless speed controller with other brushed, brushless and crawler models in the Hobbywing QUICRUN ESC collection.
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