As one of the best selling handheld power tools worldwide for DIY home improvement, repair & installation, and light duty engineering work, cordless li-ion drills are mainly evaluated by the following criteria:
1.Rated Voltage (V)
Common market grades include 12V, 18V and 20V Max. Voltage directly determines the maximum power output and load capacity of the unit.
12V models focus on lightweight household use;
18V strikes a balance between runtime and power;
20V Max is the mainstream export hot selling model, covering household applications, repair work and light duty construction scenarios.
2.Max Torque (N·m)
25N.m, 30N.m, 45N.m, 50N.m, 60N.m and more. A core performance indicator of the drill, which mainly defines screw fastening capability. Higher torque values enable driving larger size screws and completing fastening jobs on harder materials.
3.No-load Speed (RPM)
Adopts the industry standard 2 speed design. Low speed gear is suitable for screw driving and precision assembly; high speed gear applies to fast drilling and hole making operations. The dual speed structure brings clear task division, balancing operation precision and working efficiency, and serves as a globally accepted standard configuration.
4.Impact Rate (bpm)
Only impact type cordless drills feature this parameter; standard drill drivers have no impact function. High frequency axial impact combined with rotary drilling enables penetration into brick walls, lightweight concrete, tiles and other hard wall materials, greatly expanding application coverage.
5.Chuck Size (mm)
Mainstream configurations are 10 mm and 13 mm keyless self-tightening chucks.
Bits can be replaced manually without extra tools. It delivers firm clamping, and is highly compatible with most commercially available drill bits, screwdriver bits and hole saws.
6.Battery Specification (Ah)
Common market capacities range from 1.5Ah, 2.0Ah, 4.0Ah to 6.0Ah. Larger capacity delivers longer single charge runtime and extended continuous working time. Batteries of the same brand and identical voltage are interchangeable across different tool models, building a shared battery ecosystem and lowering end user costs.
7.Motor Type
Two categories are available: brushed motor and brushless motor.
Brushed motors provide cost effective performance for basic household demands.
Brushless motors eliminate carbon brush friction, generate less heat, offer higher energy efficiency and longer service life, and maintain stable performance under heavy loads. They represent a popular mid to high end configuration for export markets.
8.Clutch Settings
The unit supports fine multi level torque adjustment, suitable for both delicate small part assembly and heavy duty structural fastening.
The mainstream layout is 21+1 clutch settings. 21 torque levels adapt to diverse screw fastening scenarios, while one dedicated drill only mode matches light and heavy duty tasks accurately. It effectively prevents workpiece damage and screw stripping.
9.Maximum Drilling Capacity
Drilling limits are defined for three standard material categories: wood, metal and concrete. This parameter intuitively reflects the power grade of the unit, and acts as a key reference for customers to distinguish household grade, professional grade and industrial grade models.
10.Net Weight (kg)
Unit weight with battery installed. It governs handheld comfort and fatigue levels during long time operation. Lightweight bodies suit overhead work and confined space jobs, complying with global end user hand operation habits. Also the weight and package will
