2-Pack 6.0Ah Replacement for Kobalt 24V Battery KB624-03 KB524-03 KB424-03 Compatible with Kobalt 24 Volt Lithium Ion Batteries

I love these! I have a battery blower for my decks and now I never run out of power!

Fits the Worx 20v series, no problem going from tool to tool. Recharges and seems to exceed OEM battery by some measure.

They fit but I have yet to use them.

I got this as a backup for the Worx 20V equipment I have. This is a pretty straightforward replacement for the WA3525. The 3525 is the 2.0 Ah battery, whereas the 3520 is the 1.5 Ah version. This replacement battery looks very much like the original, with the exception of white plastic instead of orange. I would recommend looking at price comparisons, as most of these replacements are probably functionally the same.

The blower, KHB 41248-03, doesn't like these batteries. It only operates for a few seconds at a time.

I have a scientific instrument to test these batteries. Uh, not really. But we do have a Worx lawn mower that requires two batteries. Basically, both batteries are under the same load. When the mower quits, one or the other battery is depleted but not both. It is repeatable, so it is close enough to test two batteries against each other.As I write this, there is a blanket of snow. I didn't want to make the neighbors think I was an idiot by running a mower around my yard in these conditions. OK, they already think I am idiot, I just didn't want to confirm their suspicions. Instead, I sat the mower up on a table, and turned it on. Once the mower quit, I put each battery in turn into a drill. The batteries are not necessarily dead when the mower quits., so it took about 15 minutes before the drill quit for this battery. The year old generic battery ran less than 10 minutes. Not a big difference. I could have repeated the test a few times, but even with a dual rapid charger, this could have taken a long time.I know from experience that a real Worx battery will run rings around a generic. The selling point is usually the price. That is where this falls down. You can buy a genuine Worx battery for near the price of this one. This battery needs be sold at a lower price point.Because it is competing against other generics that are less expensive and there are no outstanding merits, I gave this battery only 4 stars.

This battery works perfectly with my Work tools! It holds a charge well and lasts just as long as the original. Snaps in securely and charges quickly. Great value for the price—highly recommend!

This battery is great and it's an excellent replacement for a Worx battery. I'm keeping it on hand as a spare. I have a LOT of Worx products and this battery is a bit lighter than a standard battery from Worx, so it may not last as long. But being lighter is find with me for quick jobs that don't require a lot of battery endurance. The light weight is also better for handheld items like my leaf blower and hedge clippers. I heartily recommend this battery!