DEWALT DWHT66719 FLEXDRIVE Cordless Screwdriver: problems, parts and running costs

Checked: 2026-10-17

Summary

Owner evidence beyond one r/Dewalt launch thread is thin, but the documented cautions are consistent: no speed control at a fixed 360 RPM, an integral 2Ah battery that is not serviceable, and a 60-second continuous-use cutoff with a 90-second lockout. [3][12] Running costs are USB charging electricity and bits — no subscriptions and no consumables beyond the bits in the box; the real long-term expense is pack replacement when the integral battery wears out. [1][3] At $89.99 to $97.79 (MaxTool, Northern Tool, Ohio Power Tool, October 2026) it is fair-to-good value; at $80 or less it is compelling, and above $120 the budget alternatives win. [8][9][10]

Common problems and fixes

60-second cutoff and 90-second lockout — the tool cuts off after 60 seconds of continuous operation and locks out for 90 seconds; nobody has tested how much this annoys real assembly runs. [3] Plan short runs or accept the pause. Warranty is 3-year limited. [1]
Integral battery is not serviceable — when the 2Ah pack no longer holds a charge, the manual says the pack may need replacement because it is not serviceable; no replacement-pack listing was found. [3][12]
Hot/cold charging delay — charging suspends outside the safe temperature range; the manual gives 65–75°F as the optimal charging environment. [3][12]

Parts and consumables

Integral 2Ah battery — non-removable; the manual FAQ says a pack that no longer holds a charge may need replacement, and no DEWALT replacement-pack listing was found. [3][12]
12 included 2-inch bits — PH1, PH2, PH3, SL 3/16, SL 1/4, T8, T10, T15, T20, T25, SQ1, SQ2; the quick-load collet takes standard 1/4-inch hex bits. [1]
USB-C charging cable — included; a full charge takes about 60 minutes. [1][4]
Spindle lock — engaged by hand for manual finishing torque up to 124 in-lbs. [1][4]

Yearly running cost

Subscriptions $0 — the battery is integral, so there is no platform lock-in and no annual fees. [2] Electricity: a 2Ah pack recharging over USB roughly every 680 screws; no dollar figure is computed in the sources. [1] Consumables are limited to the included bits, which owners replace as they wear; the manual’s care notes are blowing dust from the collar and torque knob with dry air. [3] Not enough data for a yearly total.

When it is a good buy

Prices seen (store and month-year):

MaxTool: $89.99 (October 2026). [8]
Northern Tool: $89.99 (October 2026). [9]
Ohio Power Tool: $97.79 (October 2026). [10]
ToolOrbit: $117.42 (October 2026). [11]
Most retailers: $79.99, noted by Pro Tool Reviews (March 2025). [4]
Around $80, per Slashgear (September 2025). [6]

[4][5]

Alternatives:

Dremel HSES-01 — the better choice at $49.99: it matches the 44 in-lbs powered torque. [4][5]
Skil Twist 2.0 — the better choice near $30: 22 in-lbs and 3 torque modes. [5]
Kobalt 4V — the better choice at $24.99: 13.5 in-lbs. [5]
Milwaukee inline competitor — costs about twice as much and includes no bits, per Slashgear. [6]