DEWALT DCD740B: problems, parts and running costs

Checked: 2026-10-13

Summary

This is a 20V MAX 3/8 in. right-angle drill/driver with a compact 4.0-in head and a deep-hex ratcheting chuck; the defining caution is overheating, with an independent test showing it starts smoking after about 45 seconds of continuous load. It is a bare tool, so the real cost is a 20V MAX battery and charger if you do not already own them.

Common problems and fixes

Limited power for heavy drilling — owners report it struggles with larger holes in 2x lumber; it is built for fastening and light-to-moderate drilling. [3]
Short battery life — a Reddit owner reports that on a fresh battery it twists your hand, meaning it drains quickly under load. [4]
No LED work light — unlike newer DEWALT drills, which matters in dark cavities. [5]
Awkward outside tight spaces — right-angle drills in general are harder to handle and to drill straight holes with away from tight areas. [6]
Brushed motor — an older design with no brushless option. [5]

Parts and consumables

20V MAX battery — sold separately; the DCD740C1 kit includes a 1.5Ah battery and charger at $229 at Burns Tools, $229.99 at Home Depot and $268.20 at Power Bolt And Tool. [7]
2-inch Phillips bit — included with the bare tool. [5]
Belt hook — included with the bare tool. [5]

Yearly running cost

There are no consumables and no subscription; the recurring cost is the 20V MAX battery and charger if you do not already own them. No priced annual total was reported, so there is not enough data to compute one. [5][7]

When it is a good buy

Around $179 bare — the typical price at Acme Tools, Northern Tool, Authorized Tool Outlet and Hanessupply (October 2026); it makes sense for electricians, plumbers and HVAC installers who work in confined spaces regularly and already own 20V MAX batteries. [8][9][10][11]
$229 to $268 for the DCD740C1 kit — better if you need a battery and charger included. [7]

Named alternatives:

DCD740C1 kit — the same drill with a 1.5Ah battery and charger; better if you do not already own 20V MAX batteries. [7]