DongCheng 40V 16-Inch Brushless Cordless Chainsaw with 2x4.0Ah Batteries – Gas-Like Power

The DongCheng 40V 16-Inch Brushless Cordless Chainsaw provides cordless cutting power for homeowners and property managers managing tree felling, storm cleanup, and firewood. It uses a high-torque brushless motor powered by two 20V 4.0Ah lithium-ion batteries running together. This setup eliminates toxic fumes, gas mixing, and standard engine upkeep, replacing pull cords with an instant push-button start.

Operational efficiency is a key strength for yard work. The system delivers up to 120 cuts through 4x4 lumber on a single charge. Routine adjustments are straightforward thanks to the external tool-free tensioning knob, allowing you to set proper chain tension in seconds without wrenches. An integrated automatic oiling system continually lubricates the 16-inch bar and chain while running to extend component lifespan.

For operator safety, the chainsaw incorporates an inertia-activated chain brake that halts chain movement in under 0.1 seconds if kickback occurs. This is paired with a built-in lock-out switch to prevent accidental startups. Furthermore, the two included 4.0Ah batteries are compatible with other tools in the DongCheng 20V and 40V lineup, making it easy to share power across multiple yard and workshop tools.

There are some practical trade-offs to keep in mind. You must fully charge both 4.0Ah batteries prior to first use to balance the power delivery, and runtime depends on keeping both packs maintained. In addition, the listing details do not specify the total tool weight, chain speed, or bar oil reservoir capacity.

Verdict: This cordless chainsaw is a great choice for property owners who need dependable cutting performance for firewood, storm cleanup, and tree clearing without dealing with gas engine upkeep. It is an especially practical buy if you plan to build out a broader collection of DongCheng 20V or 40V cordless tools.

• Motor Type: High-torque brushless
• System Voltage: 40V (dual 20V batteries)
• Battery Capacity: 2x 4.0Ah
• Guide Bar Length: 16 inches
• Cutting Capacity: Up to 120 cuts through 4x4 lumber
• Chain Brake Stop Time: Under 0.1 seconds
• Tensioning Style: Tool-free external knob
• Lubrication: Automatic bar and chain oiler

A great fit if you:

• Need to cut firewood, clean up storm debris, or fell small trees without engine maintenance.
• Want an instant push-button start chainsaw that produces zero exhaust fumes.
• Prefer quick, tool-free chain tension adjustments in the middle of a job.
• Already own or plan to buy other tools in the DongCheng 20V and 40V ecosystem.

Consider something else if you:

• Require specific listed specs like exact tool weight or reservoir size before buying.
• Prefer single-battery tools rather than managing dual battery packs.

How many cuts can this chainsaw make on a full charge?
The system delivers up to 120 cuts through 4x4 lumber on a single charge when using both fully charged 4.0Ah batteries.

Do I need tools to tighten or adjust the chain?
No, it features an external tensioning knob that allows you to adjust chain tension in seconds without using tools.

How quickly does the safety chain brake engage?
The inertia-activated chain brake stops the chain in under 0.1 seconds upon kickback.

Can I use these batteries in other tools?
Yes, the included 20V 4.0Ah batteries work across the full lineup of DongCheng 20V and 40V tools.