DeWalt Combo Kit DCK509P3 18V — DCD800 drill, DCF850 impact, DCF922 impact, DCS386 saw, DCG405 grinder, 3×5.0Ah batteries

The DeWalt Combo Kit DCK509P3 18V assembles a set of cordless professional tools designed to cover drilling, fastening, cutting and grinding tasks on construction and renovation sites. The kit includes the DCD800 brushless drill/driver, two impact drivers (DCF850 and DCF922) with different performance profiles, the DCS386 circular saw for rip and cross cuts, and the DCG405 angle grinder for metal and masonry work. Three 5.0Ah lithium-ion batteries are supplied to ensure extended runtime and quick swap between tools.

Advantages

This combo delivers a broad tool selection in a single package, reducing the need to buy individual units. Brushless motors across key models improve energy efficiency and tool lifetime while maintaining high torque and sustained performance. The inclusion of three 5.0Ah batteries provides longer continuous operation and minimizes downtime for charging. Ergonomic handles and compact tool designs support prolonged use in confined spaces and overhead work.

Suitable for

• General construction site tasks including drilling, fastening and cutting.
• Installation and mechanical fit-out work where portable cordless power is required.
• Renovation and remodeling projects involving wood, metal and masonry.
• Maintenance and repair jobs that need varied tool functionality in one kit.

When it may not be suitable

This kit is designed for professional and advanced DIY use; it may be excessive for very light occasional domestic tasks where a single multitool would suffice. For continuous heavy industrial production lines or stationary applications, corded or higher-voltage systems may deliver more consistent power and lower operating costs.

Key specifications

• Battery system: 18 V lithium-ion; three 5.0 Ah batteries included.
• Drill/driver type: brushless motor, compact design suitable for drilling and screwdriving.
• Impact drivers: two models with differing torque and speed characteristics for fastening versatility.
• Circular saw: carbide blade compatibility, designed for accurate rip and cross cuts in wood and sheet materials.
• Angle grinder: suitable for cutting, grinding and surface preparation on metal and masonry.
• Charging approach: removable batteries for rapid swap and charging (charger sold separately or included depending on pack configuration).

How to use

Select the appropriate tool for the task and fit the correct accessory — drill bit, screwdriver bit, saw blade or grinding disc — observing manufacturer recommendations for speed and accessory type. Insert a charged 18 V 5.0 Ah battery into the tool until it locks. For drilling and fastening, set clutch and speed settings on the DCD800 to match material and fastener size; use the impact drivers for high-torque fastening. When cutting with the circular saw, secure the workpiece and use proper guide fences or supports. For grinding, fit the correct disc and maintain firm two-handed control with safety guards in place. After use, remove the battery and store tools and batteries in a dry place away from direct heat.

What to consider before purchase

• Check whether the kit includes a charger in your region or if it must be purchased separately.
• Confirm that included battery capacity and the 18 V system match your existing DeWalt tools if you plan to mix and match batteries.
• Consider the types and sizes of accessories you commonly use (blades, discs, bits) to ensure compatibility.

Usage recommendations

Use the brushless drill for precision drilling and the dedicated impact drivers for repetitive high-torque fastening. Rotate batteries between tools to maintain workflow, and match accessory RPM and guard settings to the material. Regularly inspect cutting blades and grinding discs for wear and replace them to maintain safety and cutting quality.