DeWALT 20V MAX 4.0Ah Compact Battery (DCB240)

Key Features

Compact 4Ah Runtime

The DEWALT DCB240 20V MAX 4Ah Compact Lithium Ion Battery gives you 4.0Ah capacity in a compact pack, so you get longer run time without making the tool feel top-heavy or bulky.

Quick Charge Check

The built-in 3-LED fuel gauge lets you check remaining charge before you climb a ladder, start a cut list, or swap batteries mid-task.

20V MAX Platform

This battery pack is made for DEWALT 20V MAX tools and chargers, which matters if you already run that platform and want one battery that works across drills, drivers, saws, and more.

Overview

The DEWALT DCB240 20V MAX 4Ah Compact Lithium Ion Battery is a rechargeable power tool battery built for DEWALT 20V MAX cordless tools. This is a battery pack designed for powering cordless drilling, fastening, cutting, and general jobsite work. Model Number: DCB240. If you want more run time than a smaller compact pack but do not want the bulk of a larger battery hanging off the bottom of your tool, this is the sweet spot in the lineup.

The big reason people buy this battery is balance. You get 4.0 amp hours of capacity and up to one-third more run time than the DEWALT DCB230 3Ah compact battery, while keeping the same size and weight. On the job, that means more screws driven, more cuts made, and fewer battery swaps without turning a drill or impact driver into a brick.

The compact form factor matters more than the raw number on the label. A lot of users want enough capacity for real work, but they also want the tool to stay easy to handle in cabinets, overhead, and in tight mechanical spaces. The DCB240 is built exactly for that kind of work. Its smaller footprint helps with maneuverability and control, especially on tools you hold out in front of you all day.

DEWALT also gave this pack a built-in fuel gauge with a 3-LED charge indicator. That is one of those features that seems small until you use it every day. Instead of guessing whether a battery can finish a task, you can check charge status before starting a run of fasteners, climbing a ladder, or moving to the next room.