

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.
⚡ Power your garden hustle with unstoppable energy!
The WeeLun 21V 4.0AH Lithium Ion Battery is a high-capacity, durable replacement battery designed for Weelun Vivianus Garden Brush Cutter Grass Trimmers. Featuring a robust 4000mAh capacity and 21V voltage, it ensures long-lasting, powerful performance to keep your outdoor power equipment running efficiently. Engineered for easy installation and reliable use, this battery is a must-have upgrade for any serious gardener looking to maximize productivity and minimize downtime.












| ASIN | B0CDGYH9N5 |
| Assembly required | Yes |
| Best Sellers Rank | 42,486 in DIY & Tools ( See Top 100 in DIY & Tools ) 263 in Cordless Tool Battery Packs |
| Brand | WeeLun |
| Brand Name | WeeLun |
| Colour | Black |
| Country Of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 260 Reviews |
| Is Assembly Required? | Yes |
| Item Dimensions L x W | 140L x 13W centimetres |
| Manufacturer | WeeLun |
| Manufacturer Part Number | HBQ21A |
| Model Number | WCST775NY-1 |
| Number of Batteries | 2 Unknown batteries required. (included) |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Product dimensions | 140L x 13W centimetres |
| Speed | 11000 RPM |
| Style Name | WCST775NY-1 x 2 battery 2.5 |
| Unit Count | 9.0 gram |
E**B
Fantastic Price and Great Quality
Fantastic Price and Great Quality long Battery life and so Easy to use
S**G
Good value; works well.
Great value and so much better than the nylon cord strimmers.
C**Y
Powerful
Does the job really well. Lightweight easy to change blades, did the paths on my allotment easily. Changed to saw blade took out some woody weeds with ease. Battery indicator didn't move after over half hour. Impressive
M**D
Power and useful with great customer service
Really useful and powerful, But it's the 1st time I've used it this afternoon buying it and have noticed I didn't receive any round metal brush cutting blade.... Just plastic and a metal one Over all a good piece of garden equipment UPDATE.... Since this 1ST review the sellers have contacted me and have literally bent over backwards to rectify the slight problem I wrote about... This is not only a great product, But above and beyond customer service
N**.
Strimmer
This is a very sturdy and great product for the price. Would recommend
R**Y
Mil
It’s does the job fine, but it might not strong enough for few years , will see
M**N
The striker does the job what he uses for
My husband uses the striker he quit pleased with it
D**T
Fantastic product, I was pleasantly surprised
I spent ages reading reviews on loads of these cordless brush cutters, compared the different blades and batteries included etc I decided to spend a little more on this one and I'm very glad that I did. Well built, not flimsy at all Lightweight and easy to manage. Took 5 minutes to put together, not difficult. Batteries lasted very well - yes cutting through branches with the saw blade uses more power than strimming grass but that was expected. We got a good 45 minutes of strimming grass on one battery, and around 30 minutes on tougher branches and brambles with the other. 90 minutes battery recharge is accurate too. Great selection of blades/accessories. Very glad I bought this and would not hesitate to buy it again. Highly recommend.
A**G
Impressive power and battery
I know it’s a random Chinese company, but the weed trimmer /wacker comes with a three year warranty, two batteries that last hours, and a 0.08-inch diameter twisted wire. It has a couple of other accessories including a vertical adjustable height sled and a metal cutting disk. It works really well. I have not tried replacing the spool yet but you can theoretically add generic spool in and just leave 6in on either wise, or try a universal spool head. Get it especially if on sale. This easily lasts 90-120 min so will work for most jobs l. And having a cordless trimmer is so nice. Assembly was slightly confusing at first, but overall it was easy to install. I just didn’t realize that I didn’t need to install the sled and had to put away the metal disk and related attachments. Weight is noticeable but the sturdy black handle helps keep it stable. Overall a good purchase with good power and good battery life.
K**R
Works great
Works great, good price, battery lasts long enough to do my entire yard.
T**N
Supergünstiger Rasentrimmer mit viel Zubehör.
Super Trimmer zu einem super günstigen Preis,hab in gleich 2x bestellt für ein Familien Mitglied weil er so begeistert war,gute Leistung,2 Akkus dabei mit Ladegerät,verschiedene Messer,was soll man da falsch machen, kann ich nur weiterempfehlen.
B**F
Pretty good weed whacker, decent power for casual household type yard trimming.
My last cordless weed whacker was a Hyper tough brand, and ran 2x20Volt=40V, which originally retailed for about $100 also. This 21V model has a LOWER RPM, you can definitely hear that the motor is NOT spinning as fast. That's likely due to half the voltage. As for effective cutting capability, this unit, even though it's slower, still cuts pretty well. Standard grasses are not a problem at all, and you'll whiz thru them as you'd expect with a weed whacker. The overall construction though, surprisingly, is very good. The batteries have built in meters for quick checking. The charger will only charge 1 battery at a time. The batteries are larger than my previous unit. They're runtime however, is about the same. If I'm tearing through thick and tall grass, at full speed, I'll get about 15 minutes of time per battery. If I am trimming light stuff, like weeds around the house, tall grass against the fence that the mower couldn't get through, the runtime is longer. Having two batteries is definitely a nice thing. This unit comes with additional hard steel blades and a 'sled' to use this trimmer as a mini lawn mower. This is kind of cool. You can, since the trimmer head is removable, use other aftermarket blade alternatives/line alternatives. Just because you can doesn't necessarily mean you should, keep in mind the amount of available torque and effective HP this has is still pretty low. The line that this unit uses is a bit tricky to find. The manual describes it as 2mm line, which comes out to .079, so we'll round up and call it .080 line. You can use .065 as well. .095 is just a bit big for it, but if you REALLY want it, you can, but if you need .095, this unit doesn't have the torque that'd go up against weeds that warrant .095.
J**R
Nothing
Was great so far
Trustpilot
1 week ago
3 weeks ago