High-Performance Cordless Power Tools Supplier

BOSI Tools is a professional cordless power tools manufacturer from China, offering a comprehensive range including Li-ion drills, Li-ion Angle Grinders, Li-ion wrenches, Li-ion hammer drills, Li-ion circular saws, Li-ion reciprocating saws, Li-ion nail guns, and Li-ion blowers. Centered on a 20V universal battery platform, brushless motors deliver powerful performance.

From drilling and fastening to grinding and cutting, from demolition and breaking to blowing and cleaning—BOSI provides a full-scenario cordless solution that frees construction work from the constraints of power cords, offering efficient and flexible tool combinations for outdoor work, elevated installation, and mobile construction.

We can provide selection advice and customized solutions based on actual working conditions. Please feel free to contact us at any time.

What Materials Can Be Processed?

BOSI cordless power tools (lithium-ion tools) cover a wide range of material processing needs, from light-duty home improvement to heavy-duty industrial applications:

Wood and Wood-Based Panels

The Li-ion circular saw, with a 150mm blade and a 55mm cutting depth, offers 0–45° bevel adjustment and can cut plywood, particleboard, and squared timber.

The Li-ion reciprocating saw features a quick-change blade system for switching between coarse and fine teeth, suitable for wood boards, branches, and renovation demolition.

The Li-ion nail gun drives F30 straight nails from 10–30mm, used for furniture assembly and baseboard fixing.

Metal and Steel Structures

The Li-ion angle grinder, with three adjustable speeds up to 8800 r/min and a 100mm grinding/cutting disc, can grind weld marks, cut thin steel sheets, and perform rust removal and polishing.

The Li-ion wrench, with a peak torque of 350 N·m and a 1/2" square drive, is used for final tightening of structural steel bolts and for tire removal in automotive repair.

The Li-ion drill, with a maximum chuck capacity of 13mm, can drill into steel and aluminum alloy.

Concrete and Brick Walls

The Li-ion hammer drill, equipped with a safety clutch model that automatically stops upon encountering rebar, features a lightweight hammer version weighing 1.87kg with a 22mm drilling capacity, and a maximum hammer capacity of 28mm.

It is used for ceiling suspension reinforcement, through-wall pipelines, and equipment base anchoring. The gas-powered Li-ion nail gun can fasten nails into concrete without pre-drilling.

PVC and Plastic Pipes

The Li-ion reciprocating saw, paired with a fine-tooth blade, can quickly cut PVC drainage pipes and conduit pipes.

The Li-ion blower, with its dual blow-and-vacuum function, clears away pipe debris.

Dust and Debris Cleanup

The Li-ion high-velocity blower delivers a large air volume of 13.2 m³/min with three adjustable speed settings, capable of sweeping away concrete dust on construction sites, leaves in courtyards, and dust in equipment crevices.

The blower generates an air speed of 96 m/s to reach deep into narrow gaps, and its vacuum mode simultaneously collects debris.

What Are Lithium-Ion Tools?

Lithium-ion tools is a general term for portable, cordless electric tools that use rechargeable lithium batteries as their power source and convert electrical energy into mechanical energy via brushless or brushed motors.

Compared with traditional corded tools, lithium-ion tools are completely free from the constraints of power cords and can be used freely outdoors, at heights, and in areas without electricity.

Compared with fuel-powered tools, lithium batteries produce zero emissions, have low noise, and require no maintenance.

BOSI lithium-ion tools are built on a 20V universal battery platform. The entire series of battery packs is available in multiple capacities: 4.0Ah, 6.0Ah, and 4500mAh, with a one-button battery level check and cross-category interchangeability—the same battery can be freely switched between a drill, angle grinder, hammer drill, circular saw, reciprocating saw, and blower. The brushless motor is the core standard feature, eliminating carbon brushes and commutators. An electronic controller performs precise electronic commutation, increasing energy efficiency and extending service life.

From a 12V compact screwdriver drill to a 20V heavy-duty hammer drill, and from a gas-mixed drive framing nailer to a turbocharged high-velocity blower, BOSI lithium-ion tools cover seven major operation types: drilling, fastening, grinding, cutting, demolition, nailing, and blowing/vacuuming, and are driving the industry's transition from "corded-first" to "lithium-ion-first."

Our Lithium-Ion Tools vs. Other Brands: Why Choose BOSI?

Comparison Dimension	BOSI Lithium-Ion Tools	Same-Price Generic Brands	Imported High-End Brands
Motor Technology	High-quality brushless motors throughout the entire series, offering high efficiency and long life without the need for carbon brush replacement; some models are equipped with 5030/5025 high-power motors	Brushed motors or low-quality brushless ones; carbon brushes wear out quickly, resulting in short runtime and torque fade	Mature brushless technology, but the selling price is 2–3 times higher for the same specifications
Battery Platform	20V universal platform; multiple capacities available (4.0Ah/6.0Ah/4500mAh); batteries are interchangeable across the entire product range; one-button battery level check	Inflated battery capacity labels; incompatible platforms; only a single battery is provided	High-quality batteries on a unified platform, but the unit price for a single battery is expensive
Safety Configurations	The Li-ion hammer drill features a safety clutch that automatically stops upon hitting rebar; the entire series of batteries has over-discharge and over-charge protection; the tool body is wear-resistant and impact-resistant	Safety configurations are absent, posing a high risk of kickback when the bit binds	Comprehensive safety features, but functional redundancy drives up the selling price
Lightweight Design	Lightweight hammer: 1.87kg; circular saw: 1.5kg; impact screwdriver: 0.71kg; the "Slim Waist" slender body provides a comfortable grip	Thick and heavy tool bodies, causing fatigue during prolonged operation	Lightweight but with a significant professional-grade premium
Overall Cost Effectiveness	Delivers a brushless motor, a universal battery platform, safety features, and a dual-battery kit at a mid-range price point	Low price but suffers from a high motor failure rate and short battery life	Top-tier quality, suitable for ultra-high-frequency professional use

BOSI lithium-ion tools are centered on a 20V universal battery platform and an all-series brushless motor lineup, enabling a single battery to power through all job site tasks, and establishing significant advantages in portability, interchangeability, and total cost of ownership.

Common Problems and Solutions

Common Problem	Cause Analysis	Solution	Corresponding BOSI Design
Insufficient battery runtime	Prolonged operation in high gear, or aging battery	Use high gear for heavy loads and medium/low gear for routine tasks; store batteries with a 30%–50% charge; rotate between two batteries and one charger	The 20V universal platform offers multiple capacities; one-button battery level check
Battery incompatibility or failure to charge	Mixing of batteries from different brands, or oxidized contacts	Use the original charger and batteries from the same platform; clean the battery contacts	Batteries are fully interchangeable across the 20V range; gold-plated contacts prevent oxidation
Brushless motor fails to start	Battery completely drained or the controller is in protection mode	Replace with a fully charged battery; wait for the controller to reset before restarting	The brushless motor controller features intelligent protection, automatically cutting power upon overload
Drilling/cutting efficiency drops	Dull drill bit or saw blade, low battery power	Promptly replace the drill bit or saw blade and work with a fully charged battery	Quick-change chucks / SDS / quick-mount systems across all categories make accessory replacement convenient
Tool overheats and shuts down	Continuous overloaded operation or blocked ventilation slots	Clean the ventilation slots; take intermittent breaks during heavy-duty work	Low temperature rise of brushless motors; aluminum gear housing provides efficient heat dissipation

How to Choose the Right Lithium-Ion Tool Combination?

Work Scenario	Recommended Li-ion Tool Combination	Core Selection Basis	Typical Combination
Furniture Assembly & General Repair	Li-ion drill + Li-ion nail gun	The screwdriver drill provides 35 N·m for driving screws; the F30 nail gun shoots decorative trim	16V screwdriver drill + 20V rechargeable nail gun
Metalworking & Automotive Repair	Li-ion Angle Grinder + Li-ion wrench	The angle grinder handles grinding and rust removal; the 350 N·m wrench removes tires and bolts	20V Li-ion Angle Grinder + 20V Li-ion Brushless Wrench
Construction & Renovation Drilling	Li-ion hammer drill + Li-ion drill	The hammer drill drills into concrete; the drill handles wood and metal; the lightweight hammer is preferred for elevated work	20V lightweight hammer + 20V Li-ion Brushless Impact Drill
Carpentry & Formwork Cutting	Li-ion circular saw + Li-ion reciprocating saw	The circular saw batch-cuts stock with a 55mm cutting depth; the reciprocating saw handles demolition and trimming	20V Li-ion Brushless Circular Saw + 20V Li-ion Brushless Reciprocating Saw
Cleaning & Maintenance	Li-ion blower + Li-ion Angle Grinder	The high-velocity blower clears dust and debris from the site; the angle grinder handles grinding and rust removal	20V high-velocity blower + 20V Angle Grinder

Selection should be based primarily on the type of work.

First, determine the core tool category, then expand to auxiliary tools around the 20V universal battery platform, achieving multi-tool sharing with a single battery and reducing duplicate purchase costs.

The entire BOSI lithium-ion series comes standard with two batteries and one charger, satisfying the requirements for full-day rotational operation.