Quick verdict
A budget brushless blower rated at 650 CFM and 160 mph from a 1500W motor, powered by two 20V 5.2 Ah packs that together make the 40V, with three speeds plus turbo, a shoulder strap, and a claim of up to 90 minutes on low. It suits a homeowner who wants big-blower numbers for less and may already own Makita 18V packs, which the maker says it accepts. The caveat is the brand: Seesii is a value label, and the runtime, weight and compatibility claims are the maker's own.
Strengths
- 650 CFM and 160 mph on turbo, strong for the price class
- Two 5.2 Ah packs and a charger in the box
- Maker says it accepts select Makita 18V packs such as the BL1850 and BL1860B
- Three speeds plus turbo for beds through driveways
- 1500W brushless motor, lower vibration than brushed
- Shoulder strap included
Weaknesses
- Needs both 20V packs fitted to run, so no single-pack option
- Value brand with limited support and a short track record
- The 4.6-pound figure likely excludes the batteries
- Runtime claim applies to the lowest speed only
The overall YardToolLab Score is out of 100. Section scores are out of 10.
Who this blower is for
Big-brand 650 CFM blower kits with a large battery cost real money. The Seesii 40V is for the homeowner who wants those numbers for a yard of ordinary size without paying for a platform, and especially for anyone with a drawer of Makita 18V packs, which the maker says this blower will take. It is a budget tool with a long spec sheet, and the right way to read it is with the maker’s claims kept separate from what the design guarantees.
This review is based on the maker’s published specifications and on recurring owner feedback. We have not run this product ourselves.
What you get
The blower, two 20V 5.2 Ah batteries, one charger and a shoulder strap. The maker rates it at up to 650 CFM and 160 mph from a 1500W brushless motor, with three speed settings and a turbo mode, and claims up to 90 minutes of runtime on the lower settings. The stated weight is 4.6 pounds, which almost certainly excludes the packs. The listing also says the blower supports select Makita 18V batteries, naming the BL1830, BL1840, BL1850, BL1860B, BL1890 and BL18120.
Blowing power
If the 650 CFM and 160 mph figures hold, this is a whole-yard blower: enough volume to push a pile of dry leaves across a lawn and enough speed to lift damp ones off a driveway. Budget makers rate at the nozzle under ideal conditions, so expect the real-world feel to be a step below a brand-name 650 CFM machine, and owners of this class generally describe strong performance on dry debris and clippings with wet, matted leaves taking turbo and patience. The three speeds are well spaced for beds, patios and lawns, and turbo is the burst mode for the stuck layer. A 1500W brushless motor is a credible figure for this airflow and is quieter and smoother than the brushed motors on cheaper blowers.
Runtime and batteries
The battery layout is the thing to understand. The blower holds two 20V packs and runs them in series, which is how it becomes a 40V tool; one pack will not run it. Two 5.2 Ah packs at 20V hold about 200 watt-hours together, close to a single 40V 5.0 Ah pack on a brand-name blower. The 90-minute claim is for the lowest speed, and at the top speed or on turbo the figure will be a fraction of that. The Makita compatibility is the interesting part: if the ports accept Makita 18V LXT packs as the maker says, an existing Makita owner has spare runtime on the shelf. It is a third-party claim and Makita does not warrant it, so check your pack model against the list.
Build, handling and ergonomics
At a stated 4.6 pounds bare, the housing itself is light, and with two packs fitted the balance will shift back toward the hand, which is why the strap is included and worth using. The brushless motor keeps vibration low. Fit and finish on value-brand blowers is usually acceptable rather than refined; expect a plastic housing, a simple tube lock and a strap that does the job. Support is the honest weakness: Seesii sells online with no dealer network, and a failed charger or port is a return rather than a repair.
Living with it
Charge the two packs to the same level before fitting them, keep the intake screen clear, and store the batteries indoors at partial charge in winter. Check the product page for the warranty term, which the listing does not state, and keep the packaging until the first month is past.
Alternatives to Consider
The Skil PWR CORE 40 650 CFM kit with a 6.0 Ah battery is the brand-name version of this specification with a proper platform behind it. The Makita XBU03Z 18V X2 blower is the genuine dual-pack Makita tool for owners who already have LXT batteries. The Greenworks 80V 730 CFM is the stronger handheld for a larger budget.
Verdict
Buy the Seesii 40V 650 CFM if you want big-blower airflow at a budget price, are comfortable with a value brand, and either own Makita 18V packs or are happy to run the two included ones. Skip it if you want a warranty network, a blower that runs on a single pack, or a tool you expect to still be supported in five years.
Full specifications
SEESII 40V 650 CFM Cordless Leaf Blower with Two 20V 5.2 Ah Batteries, Charger and Shoulder Strap FAQs
The blower takes two 20V packs at once and runs them in series, which is how it reaches 40V. Both ports must be filled; one pack will not run it. It is a common layout in budget outdoor tools.
The maker lists the BL1830, BL1840, BL1850, BL1860B, BL1890 and BL18120 as compatible. That is a third-party claim, not a Makita one, and you still need two packs. Owners of similar dual-port tools report it works, but Makita does not warrant it.
Only at the lowest of the three speeds. On the top speed expect a fraction of that, and turbo much less. Two 5.2 Ah packs at 20V hold about 200 watt-hours between them, similar to a single 40V 5.0 Ah pack.
The listing does not say. Two 5.2 Ah packs add a noticeable amount, so treat 4.6 pounds as the bare tool and expect the working weight to be higher, which is why the strap is included.
