DEWALT 20V MAX* Battery, Compact, 4.0-Ah (DCB240)

Dewalt replacement battery works well. Lower, flatter profile than the regular Dewalt batteries which I really like. Good value for the money. Works with all my Dewalt power tools. Seems to hold the charge while in use well.

I bought this as a back up for my 20 volt hand held work light that was designed for 2ah but is a little big for it but I know it will last being dewalt quality

I have all dewalt tools but they came with the small batteries. this was a good addition long lasting and fast recharge fits my atomic drill perfectly

Arrived fast and charged up ready to go. However I will say this, it came in a large box with about 1 sq. ft. of paper packing, sorta just tossed in. Amazon needs to train their personnel how to properly package items for shipment, and not just toss it in a box and call it good. The battery is raw, meaning no packaging of it's own of any kind. Not even plastic shrink-wrap. Judging by the amount of scuffing on the case of the battery it got bounced around pretty good during shipment,. I just hope it didn't affect the longevity of it, but I guess time will tell. I still give it 5 stars though, because it was 1/3 the price here on Amazon, and it's genuine Dewalt, (as far as I can tell). Works great, so far, with my Dewalt impact driver.

Great 20 volt Dewalt battery. Got it for half price excellent value!

This battery had a minor flaw. It does not seat fully into the charger when the charger lies flat on a bench, so it does not take a charge. If I push the battery into place and hold it there, then it starts to charge as long as my hand is on the battery. It does seat into a tool for use though, and will not fall out. I have two chargers, and it fails to charge in either of them. (All 4 of the other batteries I had do seat fully into those chargers, so it is this battery.)The result was to push me to do something I should have done long ago: hang the charger from the wall, where the weight of the battery causes it to stay connected with the charger contacts and it now takes a charge. This saves me space on the shelf I had the chargers sitting on, so a good thing. No shop ever has enough shelf space.There are two attachment points on the back of the charger where if you leave a screw head sitting proud of the wall roughly 1/4 inch, the charger is designed to slip firmly over the screw heads.In the end, not quite enough of a flaw to force me to return the battery. I'm posting this comment for others to gain something, since it was an easy fix.

Battery is lightweight and holds a charge for a long time. I'd do it again.

Bought this battery when it went on sale and like all my Dewalt batteries, they work like a charm. I like the profile of this size battery. Fits well and isn't bulky keeping the profile of the tool perfect. I've used it with drills, saws, cut off tools and more. Not great for the Dewalt bower though unless the job you need done is small. But when these batteries go on sale, don't hesitate.