Greenworks Commercial 82V Optimus OCS800 Chainsaw Review: A 28-Inch Cordless Beast

Introduction

Most cordless chainsaws stay in the small-to-medium cutting territory. The Greenworks Commercial 82V Optimus OCS800 does not. It ships with a 28-inch bar, which is enormous for a battery-powered saw, and Greenworks claims the equivalent power of an 80cc gas chainsaw. That combination alone puts it in a different category from the consumer saws most people are used to.

Who This Saw Is For

The sheer size of the bar signals the intent here. A 28-inch bar on a cordless saw means this is built for real work: large trunk sections, felling, and heavy cleanup rather than trimming the occasional branch.

It also follows the form factor of a traditional gas saw very closely. The body size, the trigger system with a safety lever, and the overall handling should feel immediately familiar to anyone who has run a gas saw before. There is no awkward relearning curve when switching from gas to this platform.

Main Strengths

The first thing that stands out in use is the dual bucking spikes mounted on both sides of the bar. Digging them into bark lets you leverage the saw up and down through a cut, which makes long cuts through dense hardwood noticeably more controlled.

Balance is another genuine highlight. Held by the center handle, the saw sits in a fairly neutral position rather than pulling forward or back, which matters a lot when you are running a bar this long. It cut through a roughly 21-inch diameter solid oak log, and even handled trunk sections around 30 inches wide, slightly larger than the bar itself, by cutting from both sides.

The build quality leans professional in several places. The bar and chain oil tank is all magnesium metal with a lever-closed cap that will not get lost. The rear clutch-side cover is also metal and uses two capture nuts, so you will not lose hardware when adjusting chain tension out in the field. Chips evacuate well from the bottom of the saw, helped by a small flap that directs material away.

Safety is well covered too. The brake is both an inertia brake and an electronic one: if the saw detects a pinch, it engages the brake automatically. The saw will not operate with the brake engaged, and the onboard status display makes the current state clear. Felling marks are built into the housing for directional tree work, and the oil reservoir includes a low oil indicator that can shut the saw down before you damage the bar, chain, or motor.

Things to Consider Before Buying

Runtime is the main planning point. The kit includes only one battery, and in testing, heavy cutting on dense, knotted oak used the entire pack in about five large cuts. Smaller diameter material will stretch that considerably, but if you plan on continuous heavy cutting, spare batteries are essentially a requirement.

On the plus side, the user interface does a lot of the monitoring for you. A button on the side powers the saw on, and a small display shows the battery level so you always know how much charge is in reserve. The top-load battery bay is also a smart design: chips that fall in simply drop out the bottom, and a mesh screen on the air intake can be cleaned in the field to keep the motor cool.

Buying Advice

The kit runs about $1,800 and includes the saw, charger, and a Core 530 battery, which is the pack Greenworks recommends for running this saw. If you anticipate a lot of continuous cutting, budget for extra Core 530 batteries at around $750 each, though sales come up occasionally and anyone already on the Greenworks Commercial platform will likely have spares on hand.

A two-year warranty backs the whole package. For tree crews and property owners with genuinely large material to process, the OCS800 makes a strong case as a gas replacement, provided you go in knowing the battery math for sustained heavy work.

Conclusion

The Greenworks Commercial 82V Optimus OCS800 is a serious cordless saw with a genuinely large 28-inch bar, gas-equivalent claimed power, and thoughtful pro-style details from magnesium construction to dual bucking spikes and an electronic brake. Its one clear trade-off is runtime on heavy cuts, so plan on spare batteries if you will be cutting all day.