DeWalt
FLEXVOLT DCCS670
$389.99
Best Chainsaws · head-to-head
FLEXVOLT DCCS670 vs CS-400
A sourced, side-by-side comparison. FLEXVOLT DCCS670 is cheaper at $389.99. Every spec and price links to its source.
Echo
CS-400
—
Which is better: the FLEXVOLT DCCS670 or CS-400?
The CS-400 wins 1 of the 1 specs we compare head to head; the other wins 0.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | FLEXVOLT DCCS670 | CS-400 |
|---|---|---|
| US price | $389.99 | — |
| Brand | DeWalt | Echo |
| Released | — | — |
| Power source | battery | gas |
| Bar length (in) | 16 | 18 |
| Engine cc or voltage | 60 V MAX | 40.2 cc |
| Weight (lb) | 12.2 | 10.1 |
| Anti vibration | — | Yes |
| Tool less chain tensioning | Yes | Yes |
| Automatic oiler | Yes | Yes |
| Release | — | — |
Sources — FLEXVOLT DCCS670: dewalt.com (verified 2026-06-19). CS-400: echo-usa.com (verified 2026-06-19).
What's the difference between the FLEXVOLT DCCS670 and CS-400?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Power source: FLEXVOLT DCCS670 battery vs CS-400 gas
- Bar length (in): FLEXVOLT DCCS670 16 vs CS-400 18
- Engine cc or voltage: FLEXVOLT DCCS670 60 V MAX vs CS-400 40.2 cc
- Weight (lb): FLEXVOLT DCCS670 12.2 vs CS-400 10.1
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
FLEXVOLT DCCS670
Only one whitelisted tester, Pro Tool Reviews, hands-on tested the DeWalt DCCS670. In its 8-saw shootout it placed 4th overall, praised as a fast, well-balanced cutter (5.93s through 8-inch pine) with wide, comfortable handles, but dinged for a side cover that clogs with chips and flimsy plastic bucking spikes. (1 sourced review, 1 lab-tested.)
Praised: Fast, well-balanced cutter — one of three saws to break the 6-second mark (5.93s avg) on an 8-inch pine log, 3rd in cutting speed; Wide front and rear handles feel secure in the hand, especially the full-wrap rubber rear grip; Strong feature set: easiest tool-free adjustment, coast-down chain brake, and a glove-friendly quarter-turn oil cap with the best oil-pouring access tested.
Flagged: Enclosed side cover lets chips pile up above the tension knob and clog the saw, spraying chips out the front and impairing visibility; Small plastic bucking spikes weaken leverage on vertical bucking cuts; Idiosyncrasies keep it out of the top tier — ranked 4th of 8 overall.
CS-400
Only one whitelisted tester, Pro Tool Reviews, published a genuine hands-on field test of the exact Echo CS-400 18-inch; other coverage (Consumer Reports, enthusiast blogs) fell off-whitelist and was excluded. Two professional tree-trimmers rated performance 9/10, praising the tool's perfect balance, easy two-pull i-30 starting and butter-smooth cutting through a palm stump, decking and small trees. The flags are loud ~107 dB full-throttle operation that demands hearing protection, a Value score of only 7/10 on price, and the tester's own caveat that long-term reliability was not assessed. (1 sourced review, 1 lab-tested.)
Praised: Near-perfect balance and ergonomics with the standard 18-inch bar; Very easy starting via i-30 system, typically two quick pulls; Strong cutting power through palm stump, decking and small trees.
Flagged: Very loud at full throttle (~107 dB); hearing protection required; Long-term reliability not assessed by the tester; Priced higher by the numbers than some rivals (Value scored 7/10).