KUNLUN 20V 5.5Ah 2 Packs Battery Compatible for Worx 20-Volt Battery WA3575 WA3578 WA3520 WA3525 WA3012 WG151s WG155s WG251s WG255s WG540s WG545s WG890 WG891 20Volt Power Tools

Right price, better than my originals, holds charge and gets the job done

Have had for about 6 months now with weekly use. Able to charge on my Worx charger. Bought it because the original batteries that came with my lawn mower don't last the entire mow. About 3/4 of the way done with my quarter acre property, I have to change the battery out. The same is true of this set if I start with them. I assume that they are lasting what the length of time they are supposed to last. Would buy them again. Don't need to buy a charger if you have the Worx charger.

Fit the charger and all the tools perfectly.

Okay, so I bought the WORX Nitro WG186 40V Power Share PRO Attachment-Capable Driveshare 15" Cordless String Trimmer earlier this year, and I think it's a really great battery-powered brush cutter, but it needs a pair of 20V batteries to run. My other tools from WORX also require batteries in pairs, but those came with 2 Ah batteries, which are half the capacity (and size) of the 4 Ah batteries which came with the WG186. The 4 Ah batteries that came with the trimmer give me about 30 minutes of runtime on full power. When I tried a set of the 2 Ah batteries, I only got about 10 minutes of full power. Even though I can get a half hour of runtime from the original batteries, it's not enough to get my entire quarter acre yard done in one go, so I needed at least one more set of 4Ah batteries so that I could swap to and keep going. But the OEM options were very expensive, about a hundred bucks each, and you still need a pair of them. So I decided I wanted to see what some of the aftermarket compatible options were like. If they worked decently enough, then it would be a good investment (at a third of the price), and if they absolutely sucked, then it might suggest that the OEM batteries really are done better and the cost is worth it. I tried to do a little research on the manufacturers of the WORX-compatible options listed here on Amazon; most of them seem to be straight up battery companies, who make compatibles for all kinds of tool lines. I decided to go with these, but I no longer remember exactly why. They work pretty well. I don't get the same full ~30 minutes I can get from the OEM batteries, but it's close; about 22 minutes. That's a reasonable trade-off I'm willing to take for the considerably lower cost. They seem to take about as long to charge, a couple hours, so I can still only work so long before I need to wait for my first round to recharge. I'll definitely want to get another set to add to my rotation.

Works great for couple years now

Arrived on schedule and have been charged but not utilized due to westher

Came fully charged, works great with the blower and trimmers I have. For a non OEM product, batteries fit and lock into tools and charger as well as the original battery. Have only used them once for yard work, but so far, A+++ for the pricing.

VERY, very short run time compared to OEM batteries