Rank #8 in Best Cordless Chainsaw 2026: 10 Ranked, and Why 40V Isn't 40V
SEYVUM 12in Mini Chainsaw with 2 x 4.0Ah Batteries and 2 Chains
Price and rating as shown on Amazon when we collected them. Both change.
The SEYVUM LJ-002 is a 12-inch cordless chainsaw sold as a kit: the saw, two 20V 4.0Ah batteries, two 12-inch chains, a dual charger, gloves and goggles, all for £79.99. It sits eighth in our cordless chainsaw guide and carries 4.5 out of 5 from 1,325 ratings, with the listing placing it 29th in Amazon's Chain Saws category.
The number worth slowing down on is 1,200W. That is the motor figure in the second bullet, and the same listing's Included Components field describes the tool as "1 x 20V Chainsaw" running on 20V packs — 1,200W drawn at 20V works out at 60A, which is a lot to ask of a 4.0Ah pack in this class. The listing never says whether the two batteries run together or one at a time. There is a second mismatch in the same advert: the Item Highlight field promises "Auto Oiling", while the oiling bullet describes an "easy-press manual oiling system" and the first bullet tells you to add lubricating oil yourself before every use. Everything on this page comes from the Amazon listing as we found it, not from a saw we ran ourselves.
How those 1,325 ratings break down
An average hides its own shape. This is the spread behind the 4.5 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £79.99 |
|---|---|
| Rating | 4.5 out of 5 from 1,325 ratings |
| Motor | 1,200W brushless (as listed), on a saw the same listing specs as 20V |
| Battery | 2 x 20V 4.0Ah, listed as 2 x 4,000mAh in the bullets |
| Bar and chain | 12 inches, 29 ft/s chain speed |
| Weight | 1.7 kg (3.9 lbs) |
| Oiling (as listed) | "Auto Oiling" in the Item Highlight; "easy-press manual oiling system" in the bullets |
| Best Sellers Rank | 29th in Chain Saws, 8,353rd in Garden |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Handy chainsaw. Bought it to drastically cut back my Mother's garden and it is proving successful.The 2 batteries are very useful.Have done most of the cutting and I have not yet resorted to the second chain.Happy with the purchase.”
Verified purchase“I love my saw. I have used this so many times. It will warn you when it is getting too hot. I have 2 batteries but usually only need one for the jobs I do.”
What it is up against
The rivals it was ranked against in Best Cordless Chainsaw 2026: 10 Ranked, and Why 40V Isn't 40V.
Questions people ask
How many batteries come with the SEYVUM LJ-002?
Two. The Included Components field lists 2 x 20V 4.0Ah batteries, along with a 1.8A dual charger, two 12-inch chains, gloves, protective glasses and a manual.
How long does one battery last?
The listing states 30-45 minutes of cutting wood and trimming branches per charge, and advises charging fully before use. It does not break that figure down by battery or by wood type.
Is the chain oiler automatic?
The listing says both. The Item Highlight field reads "Auto Oiling", but the bullet on oiling describes an "easy-press manual oiling system", and the first bullet instructs you to add lubricating oil and let the SEYVUM LJ-002 run idle for about 10 seconds until oil flow is normal.
What can the SEYVUM LJ-002 cut?
The listing claims a 12-inch diameter log in 8 seconds, with a chain speed of 29 ft/s and a 1,200W brushless motor. Those are the seller's figures, not measurements of ours.
Does the 1,200W motor run on both batteries at once?
The listing does not say. It gives a 1,200W motor figure while the Included Components field calls the tool "1 x 20V Chainsaw" and supplies two 20V 4.0Ah packs, without explaining whether they are used together or one at a time.
How heavy is it?
1.7 kg (3.9 lbs), which the listing presents as light enough for one-handed operation. It also lists a safety lock against accidental starts, a flip guard and a pair of protective goggles in the box.
Comments
Reader comments are not checked against the manufacturer's claims above.
No comments yet
Be the first to add something we missed — a price change, a spec that turned out wrong, or how one of these held up.
Leave a comment
No account needed. Own one of these? Tell other readers how it actually performed.