6.0Ah Replacement Battery Compatible with 20V Lithium Battery WA3525 WA3578 WA3520 WA3575 WX550L WG629 WG547 WG545 WG801 WG320 WX176L WX169L WX682L WG163 Cordless Tools Battery 2-Pack

Though my weedeater held up OK, the blower would not allow me to get the driveway, sidewalk and patio without changing (original) batteries. With these newer, more-powerful batteries, I am able to run the circuit multiple times on a single battery and have the second one for diving into the yard, as needed. I didn't need to replace the blower, just the battery, and very happy with the performance pickup.

While these work in all the WORX tools that I have, they are a bit of tight fit on a couple of tools which require a bit more force to remove them from the tool. Other than that, they charge fairly quickly using the dual charger I purchased here on Amazon and last for a while. Very handy when using with the ExacTrack circular saw and Nailer for sure.

Only draw back is extremely difficult to remove from tool due to stiffness of contacts. Hope that will loosen enough to remove without prying off with screwdriver over time.

There are two batteries in the box. They charged perfectly and I was able to do the whole job with one battery, whereas I use to use 3 of the smaller batteries.It makes the weed wacker heavier but manageable.So far they work perfectly. I only got them a fortweek ago.

Very tight fit on some of the tools.

Huge capacity - both batteries came fully charged. Transforms my Worx blower to another level of performance. Great build quality and excellent price for the performance they deliver. Highly recommend; you won’t be disappointed.

These lithium batteries are considerably less expensive than those provided by Worx, however, they are not up to the same performance standard. They claim to be rate at 6Ah, but they last no longer than the Worx 4Ah. They also do not fit some of my Worx Powershare tools very well. We have a 40V String Trimmer and these after-market batteries are improperly sized which makes them difficult to insert on the device and then EXCEPTIONALLY difficult to remove. They are half the cost, but they just don't deliver the duration expected and they're simply a pain to use.

If you don’t mind having to force it onto the tool and having to get a flat head to take it out after you finished using the tool then go ahead and buy it , but if you don’t have the strength to take this battery out then don’t buy it , the original battery’s for the Worx tools slide in and out with ease , but this one take time to install it to the tool and taking it the tool requires some pushing and work .

My tools run for less than a minute before the battery dies. Wait a minute, it'll run for another minute. Wasted my money - don't waste yours.