SEESII M16 Ace 40V Cordless Chainsaw, 16-Inch Bar, Brushless Motor

For homeowners handling tree trimming, firewood, or storm cleanup, the SEESII M16 Ace brings cordless cutting power to outdoor work. Its 16-inch guide bar is suited to branches and logs, while the 40V brushless motor runs without gas.

Two 40V 4.0Ah batteries and a dual fast charger support longer work sessions. The chainsaw also has an automatic chain oiler and tool-free tension adjustment for practical upkeep between cuts.

A chain brake, safety lock, and overload protection are built in. Protective goggles and gloves are included for added preparation before use.

Best use cases

Use the 16-inch SEESII chainsaw for pruning tree branches, cutting firewood, and clearing fallen wood after a storm. Its cordless design suits yard work where moving freely around trees or a woodpile is useful. Compared with a gas chainsaw, this battery-powered approach avoids gas fumes and pull-starting, compared with a smaller-bar saw, the 16-inch bar is designed to handle wider branches and logs.

For a practical work session, keep the chain lubricated with the automatic oiler, then adjust tension using the built-in knob as needed. The two batteries provide a ready-to-swap power setup, and the charger is included for charging between jobs.

Specifications

• Model: M16 Ace
• Type: Cordless chainsaw
• Power: 40V, 2000W brushless motor
• Guide bar: 16 inches
• Chain speed: 35 ft/s
• Batteries: Two 40V 4.0Ah batteries
• Chain specification: 3/8-inch low-profile pitch, .050-inch gauge, 59 drive links
• Chain oil reservoir: 150 ml, automatic oiler
• Tension adjustment: Tool-free
• Safety features: Chain brake, safety lock, and overload protection
• Dimensions: 17.3 × 11.8 × 7.7 inches
• Weight: 10.3 pounds
• Included components: Chainsaw, batteries, chargers, protective goggles, and gloves

Pros

The brushless 40V motor provides a gas-free option for common outdoor cutting tasks, and the 16-inch bar gives the saw a useful reach for branches and firewood. Two batteries make it easier to continue working with a charged battery ready to swap in. The automatic oiler supplies chain lubrication during use, while the tool-free tensioning knob makes adjustments straightforward. A chain brake, safety lock, and overload protection add built-in safeguards, and the included goggles and gloves help prepare you for the job.

Questions before you buy

How long can the chainsaw run on its batteries? The product lists up to 90 minutes of runtime. Actual runtime can vary with the work being done.

Are the batteries compatible with 20V tools? The batteries and chargers are specified for 40V tools only, not 20V tools.

What chain specification should I use for replacement? The listed chain has a 3/8-inch low-profile pitch, .050-inch gauge, and 59 drive links. Match these specifications when selecting a replacement chain.

Final verdict

The SEESII M16 Ace is a practical fit for homeowners who want a cordless saw for tree trimming, firewood cutting, and storm cleanup. Its 16-inch bar, two 40V batteries, automatic oiling, and tool-free tension adjustment bring useful capability and straightforward upkeep to outdoor cutting work.