# SEYVUM 12in Mini Chainsaw with 2 x 4.0Ah Batteries and 2 Chains

Source: https://www.ranked10.co.uk/garden/best-cordless-chainsaws/seyvum-lj-002-cordless-chainsaw
Ranked #8 in "Best Cordless Chainsaw 2026: 10 Ranked, and Why 40V Isn't 40V": https://www.ranked10.co.uk/garden/best-cordless-chainsaws

- Price: £79.99 (checked on Amazon UK on 2026-09-15)
- Amazon rating: 4.5 from 1,325 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0GWM5PMN2?tag=ranked10-21

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.

## Specification

| Field | Value |
|---|---|
| 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 |

## 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.