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Why We Love This Deal
If you’ve ever purchased any DeWalt 20V Max power tools in a kit, they probably came with standard 2Ah batteries. These are fine for basic screwdriving or drilling tasks, but for tools that require more energy, you’ll find that they fade pretty fast. If you want to level up your tools’ output, take a look at DeWalt’s classic 4Ah Lithium-ion batteries on Amazon as a replacement while they’re nearly $100 off.
The two-pack of DeWalt’s 20V Max 4Ah Lithium-Ion Batteries is on sale for $125, a 43% discount off its regular price of $219. This bundle gives you batteries that provide all the performance you need and then some, up to 80-watt hours, in a thinner-than-average design. It has been purchased hundreds of times last month alone, and this price is currently better than all of the hardware stores we checked.
DeWalt 20V Max 4Ah Lithium-Ion Battery 2-Pack, $125 (was $219) on Amazon
Courtesy of 
What Shoppers Should Know
- Tool Series: DeWalt 20V Max
- Amps: 4
- Watt-Hours: 8
- Battery Weight: 1.1 pounds
- Battery Gauge: 3-level LED lights
This 2-pack comes with dual 4Ah batteries (DCB240), which can provide you up to 80 watt-hours of smooth, solid performance. They have a slimmer profile that slightly drops the weight to about the same as DeWalt’s smaller, 3Ah compact battery. With these, you get longer runtime and uninterrupted working sessions compared to the kit batteries, and there’s also a built-in 3-level LED fuel gauge that you can keep your eye on for long stretches. This set is fully compatible with DeWalt’s 20V Max ecosystem and comes with the brand’s 3-year warranty.
If you’re not sure if this 4Ah bundle is the right fit for your needs, here’s what to consider. DeWalt’s 2Ah batteries are normally the lightest and usually cheapest, but they’re best for quick, light-duty jobs. The 4Ah batteries are considered a sweet spot for most DIYers and professionals, balancing runtime with dexterity. The 5Ah batteries are also popular, but these are best used on energy-hungry tools like saws and grinders.
And, at $62.50 per battery, this listing is as cheap as we could find online for this particular set. The Home Depot lists it at $149 on sale, while Lowe’s comes a little closer at $129.
Related: DeWalt’s 25-Piece Socket Set Is on Sale for Only $33 Right Now
What Buyers Are Saying
Most shoppers haven’t been surprised by how well these work, which just goes to show the quality and reliability expected of DeWalt. One shopper said that it’s “very robust” for a 4Ah battery. Having put in hours on this set, they added that they were thrilled to see leftover power at the end of their project.
“Short but mighty. Half the height of the 8Ah PowerStack battery—works great,” said another shopper, while a third mentioned this “powerful” 2-pack is “lighter than a 5Ah, almost the same power.”
Some of DeWalt’s best compact 20V batteries are now combined with Amazon’s compact pricing for one heck of a deal. If you want better balance, more control, and less fatigue while using your power tools, this 4Ah battery 2-pack is the way to go. Grab your set while you still can.
