Li-ion Brushless Wrench

BOSI's Black Warrior Cool Series Li-ion Brushless Wrenches feature a high-quality brushless motor, delivering high performance, high torque, and powerful bursts of force. They are available in three torque levels: 350 N·m, 550 N·m, 850 N·m, and 1200 N·m, with battery capacities of 4.0 Ah, 4.0 Ah, 6.0 Ah, and 6.0 Ah respectively.

They support one-button battery level monitoring and feature a high-quality tungsten steel shaft with high hardness, high strength, and wear resistance. Intelligent self-loosening/torque adjustment functions ensure easy and safe use. Standard configuration includes two batteries and one charger.

Suitable for professional operations such as automotive tire removal and installation, mechanical bolt tightening, and steel structure installation.

Product Parameters

Product Advantages

High torque output: 350N·m suitable for passenger car tires; 550N·m suitable for SUVs and light trucks; 850N·m suitable for heavy trucks and construction machinery bolts; 1200N·m suitable for the maintenance and repair of large machinery, lifting equipment, and mining machinery.

Brushless Motor: No carbon brush wear, long lifespan, high efficiency, and over 20% longer battery life with the same battery.

Intelligent Self-Loosening/Torque Adjustment: Automatically slows down after loosening the nut to prevent it from flying out; automatically stops tightening when the set torque is reached to protect the threads.

High-Quality Tungsten Steel Shaft: High hardness, wear-resistant, and does not deform under long-term high load use.

Large capacity battery: The 6.0Ah model has longer battery life and is equipped with fast charging to meet all day operation needs.

Ergonomic design: Rubber-coated handle, balanced center of gravity, lightest bare machine at 1.35kg (550N·m model), no fatigue during long-term operation.

Product Comparison

Model Selection Suggestions

● By Usage Scenarios:

Passenger car tire and small machinery repair → Choose 350N·m (BS665206), lightweight and sufficient.

SUVs, light trucks, agricultural machinery → Choose 550N·m (BS665208) for excellent balance.

Heavy trucks, construction machinery, steel structures → Choose 850N·m (BS665209) for ample torque.

● Based on battery life requirements: For heavy daily workloads, choose the 6.0Ah battery model (BS665209); for intermittent use, choose the 4.0Ah economy model.

● By budget: 350N·m offers the best value; 550N·m has the most comprehensive functions (four-speed adjustment); 850N·m represents a professional-grade investment.

● By weight preference: 550N·m is the lightest at only 1.35kg; 850N·m is heavier (2kg) but has higher torque.