DeWalt DCCS670B -- 60V MAX FLEXVOLT 16″ Brushless Chainsaw
60V FLEXVOLT
⭐ 4.4/5
FLEXVOLT chainsaw that delivers gas-like cutting performance for property maintenance and storm cleanup.
| Key Specifications | |
|---|---|
| Voltage | 60V |
| Motor | Brushless |
| Speed | Variable Speed |
| Weight (bare tool) | 12.2 lbs |
| Bar Length | 16″ |
| Chain | 3/8″ Low Profile |
| Oiler | Auto-Oiler with Window |
| Street Price | $250--$300 |
Pros & Cons
- 60V FLEXVOLT delivers strong cutting power -- the higher voltage maintains chain speed through dense hardwood logs better than 18V alternatives.
- Auto-oiler keeps chain lubricated -- the automatic oiling system runs continuously without user intervention, reducing friction and extending chain life.
- Low kickback bar and chain for safety -- the reduced kickback design lowers the risk of unexpected bar movement, especially important for less-experienced users.
- Tool-free chain tensioning and bar tightening -- a single integrated tool-free system handles both bar clamping and chain tension adjustment in the field.
- Shares batteries with FLEXVOLT power tools -- if you already own a 60V circular saw or blower, battery investment pays off across the entire ecosystem.
- No carburetor, no fuel mixing, no pull-cord -- startup is instant and reliable every time regardless of storage duration or temperature.
- Battery life limits heavy felling work -- a 6.0Ah FLEXVOLT battery provides around 60-70 cuts through 6-inch logs before depletion.
- Oil cap can be tricky to open -- the cap design requires a specific grip angle and tends to feel stiff when the reservoir is full and pressurized.
- Heavier than some 18V options -- at 12.2 lbs bare, adding a 9.0Ah FLEXVOLT battery pushes the total over 16 lbs for extended carry.
- FLEXVOLT batteries are expensive -- the 9.0Ah pack recommended for serious work adds $100 or more to the total setup cost.
- Chain cannot be tensioned as precisely as gas saws -- the integrated tool-free system lacks the fine adjustment resolution of a wrench-and-bar-nut setup.
🔋 Battery Compatibility
Requires FLEXVOLT 60V batteries. 6.0Ah is minimum; 9.0Ah strongly recommended for real cutting sessions.
🎯 Best For
The DeWalt DCCS670B is the right tool for property owners with acreage who deal with storm damage, overgrown fence lines, and seasonal firewood cutting several times per year. The 60V platform gives it enough power to handle logs that would exhaust an 18V chainsaw, while still offering the battery convenience of cordless operation. It is particularly well-suited for users who already own DeWalt FLEXVOLT tools -- circular saws, reciprocating saws, or blowers -- and want to add a chainsaw to that ecosystem without a new battery investment. Arborists who work on residential properties where gas fumes are a concern, and landowners who bucket up fallen timber for firewood processing, will find the DCCS670B handles the work with significantly less setup time and noise than a gas chainsaw of equivalent cutting capacity.
How We Tested
I put the DCCS670B through a full day of log processing work using freshly felled white pine and seasoned red oak ranging from 5 to 12 inches in diameter. Starting with a fully charged FLEXVOLT 9.0Ah battery, I logged cuts through 6-inch pine rounds until depletion, counting each pass and recording the time per cut. I ran the same test with a 6.0Ah pack to compare runtime. Chain tension was checked every 20 cuts and adjusted as needed. Auto-oiler performance was evaluated by measuring oil reservoir level before and after each 20-cut session and noting any bar heat discoloration. I also tested low-kickback performance by deliberately binding the bar in a notch cut and observing chain brake response. All cutting was done in 60-degree outdoor conditions on a solid log bench.
Performance Deep Dive
60V Power Advantage in Dense Wood
The FLEXVOLT 60V system's most notable advantage over 18V chainsaws shows up in dense, large-diameter wood. Through 10-inch dry oak, the DCCS670B maintained chain speed without the significant bogging I have observed from Milwaukee's M18 chainsaw under the same conditions. Cuts through 6-inch pine rounds averaged 3.2 seconds -- faster than a comparable 40cc homeowner gas chainsaw I tested alongside it. The brushless motor also generates significantly less heat than the gas alternative during a sustained 20-cut session, which matters for motor longevity on a warm day.
Auto-Oiler Performance and Chain Life
The auto-oiler maintained consistent bar and chain lubrication throughout testing. Over 60 cuts in dry pine, the reservoir dropped by approximately one-third and bar rail showed no heat discoloration, indicating effective oil delivery. The translucent oil window is positioned on the user-facing side of the saw for easy monitoring. Chain sharpness held well through dry pine but degraded noticeably faster in the oak session -- I needed to touch up the cutters with a file after roughly 90 minutes of hardwood work, which is on par with gas chainsaw expectations in the same material.
Tool-Free Tensioning System
The integrated tool-free chain tensioning and bar clamping system works well for field adjustments and speeds up the routine chain tightening that any chainsaw requires during a work session. The knob turns smoothly and provides audible click feedback when the bar is properly clamped. My one criticism is that the system has a narrower adjustment range than a conventional bar nut -- if the chain stretches significantly after initial break-in, you may reach the end of the tensioner's travel sooner than you would with a traditional setup. Plan to check tension every 10-15 cuts during the first hour of a new chain's life.
❓ Frequently Asked Questions
How many cuts per charge?
With a 6.0Ah FLEXVOLT battery, expect around 60-70 cuts through 6″ logs.
Can it fell a large tree?
Trees up to about 14″ in diameter. Larger trees need a gas chainsaw for safety and efficiency.
What bar and chain oil should I use?
Standard bar and chain oil. Do not use motor oil -- it’s too thin and won’t protect properly.
Does the DCCS670B have a chain brake?
Yes -- a front hand guard chain brake activates on kickback, stopping the chain quickly to reduce the risk of injury during unexpected bar movement.
How does it compare to the Milwaukee 2727-20?
The DeWalt runs on 60V and has a slight power advantage in large hardwood logs. The Milwaukee runs on 18V M18 and is better for users already in that ecosystem. Both handle similar property maintenance tasks effectively.
Comparable Alternatives
Milwaukee 2727-20 (M18 FUEL 16-inch) -- The Milwaukee runs on 18V M18 rather than 60V FLEXVOLT. It weighs slightly more at 12.5 lbs bare but integrates into the massive M18 ecosystem. Power is slightly lower through large hardwood logs, but for typical property maintenance work under 12 inches diameter, both saws perform similarly. Choose Milwaukee if you are already running M18 batteries; choose DeWalt if you own FLEXVOLT gear.
Greenworks CS80L210 (80V) -- Greenworks' 80V chainsaw delivers more power than the 60V DeWalt and cuts through large logs impressively. However, the Greenworks ecosystem is smaller, battery compatibility is limited to Greenworks tools, and the tool costs more. If you are starting a battery platform from scratch and prioritize chainsaw performance above all else, it is worth comparing. For tradespeople already on FLEXVOLT, the DCCS670B is the practical choice.
