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DEWALT 20-Volt Max 4 Amp-Hour Lithium Power Tool Battery

6 Reviews
  • 4 Amp hour (80 watt hour) capacity provides extended runtime
  • Same size and weight as DCB230 20V MAX compact 3Ah battery
  • Lighter weight with same capacity as DCB204 4Ah battery


The DCB240 20V MAX 4Ah compact lithium ion battery provides the highest capacity within the DEWALT 20V MAX compact battery lineup. Using state-of-the-art lithium ion technology, the DCB240 delivers up to one-third more run time while maintaining the same size and weight as the DCB230 20V MAX 3Ah compact battery. Its small size and light weight provide ergonomic benefits for increased tool maneuverability and control for overhead applications. The DCB240 includes a fuel gauge LED charge indicator and 3-year limited warranty.
  • 4 Amp hour (80 watt hour) capacity provides extended runtime
  • Same size and weight as DCB230 20V MAX compact 3Ah battery
  • Lighter weight with same capacity as DCB204 4Ah battery
  • Compatible with 20V MAX tools and chargers
  • Includes fuel gauge 3-LED charge indicator
Weight 1.15 lbs
Dimensions 7.37 × 3.5 × 7 in

Latest reviews

  1. Freddy

    Got this on sale. Needed another backup since I left a battery somewhere. Decided to then upgrade and get this 4ah model. Definitely holds up to my expectations.
    Ordered online, pickup was quick n easy during Covid-19.

  2. leahcimnagrom

    I have four dewalt 20-volt batteries. Two 2AH for the drill, one 4AH for the grinder & one 8AH for the saws all. I purchased the heavy duty charger & charges twice as fast. Expensive but worth it.

  3. Jak65

    I have been using this battery for a little over one month. I bought a twin package. I have been very satisfied with its performance. J


    [This review was collected as part of a promotion.] Battery works as should. Would have given a higher except it is pricey. Not sure about durability yet so only 3 stars at this time.

  5. JAHE

    Exactly what i needed for a gift. Easy to order and arrived ahead of time

  6. OnlineShopper2021

    Dad loved it! Exactly what he wanted and for a decent price.

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