The Greenworks MO48L4422 is a 48V cordless electric push lawn mower equipped with a 21 inch steel deck and brushless motor technology. At only 68 pounds, it's lightweight and easy to maneuver.

Compared to gas-powered mowers, electric mowers like Greenworks offer a low maintenance and eco-friendly alternative without compromising cutting power. They produce no emissions, there is no spark plug or air filter to change, and no need to refill gasoline or oil. Just charge the battery and you're ready to go.

Battery and Motor

The Greenworks MO48L4422 comes with two 24V 4.0Ah lithium-ion batteries providing a total of 48V power. The batteries can be charged independently or together in the included charger and charging them for 4 hours provides 60 minutes of run time. The battery capacity may seem small compared to higher-end mowers, but it is sufficient for 1/4 acres on a full charge.

The mower features an axial flux brushless electric motor rated for 350W to cut through tough lawns. Brushless motors provide quieter and more efficient operation than standard brushed motors. The lack of brushes to periodically replace also means the motor should provide longer life with no maintenance over traditional counterparts. While under hard use the run time may reduce slightly, the batteries and motor have enough power for most suburban lots in a single charge.

Cutting Deck

The Greenworks MO48L4422 mower features a 21 inch steel cutting deck. The cutting width allows the mower to cover more grass in a single pass, improving efficiency for larger yards. The steel construction is rugged and durable, designed to withstand impact as well as general wear and tear over years of use.

The deck houses two high efficiency brushless blades that deliver optimal cutting performance. The blades are designed to provide a clean, even cut whether mulching grass clippings back into the lawn or side discharging them. The lift mechanism provides up to 5 position height adjustment from 1-1/2 - 3-3/4 inches, allowing customization for the needs of different grass types. Overall the 21 inch wide cutting deck with durable steel construction and efficient dual blade design makes quick work of larger yards.

Drive System

The Greenworks MO48L4422 self-propelled mower features a variable speed, brushless AERSTM motor-powered rear-wheel drive system that allows the mower to tackle hills and rough terrain with ease. The self-propelled feature engages with the press of a button on the handle and propels the mower forward at a pace that matches and adapts to the user's walking speed, up to 4.5 miles per hour. This makes it easy to mow large yards efficiently without wearing yourself out pushing the mower.

The speed of the self-propelled drive can be smoothly adjusted via a speed dial to fit the user's preferred walking pace and terrain, allowing full control over the mower. Reviewers across the board praise the effectiveness and usefulness of the self-propelled system for making an otherwise heavy, 48V battery-powered mower easy to maneuver. Overall, the variable speed AERSTM rear-wheel drive allows the Greenworks mower to offer effortless self-propelled mowing over all types of terrain.

Safety Features

The Greenworks MO48L4422 is equipped with important safety features to prevent accidents while operating the mower. One key feature is the blade brake clutch system, which brings the spinning blades to a stop within seconds if the operator releases their grip on the drive bar. This can prevent injuries if the mower is accidentally released while in use.

Another helpful safety component is the roll back feature integrated into the self-propel system. This automatically disengages the drive if the mower begins to roll backwards, preventing accidents on slopes and hills. Together with the blade brake, it helps ensure safe operation even in tricky terrain.

Overall, Greenworks prioritized key safety technologies to protect users while mowing. Both the fast blade brake and the roll back auto disengage on the self-propel system add an extra layer of protection when operating this electric mower.

Noise Level

The Greenworks 48V 21 inch mower operates at a quiet 70 decibels. This makes it suitable for lawn mowing at any time without excessive noise disruption. 70 decibels is comparable to the noise level of a washing machine and quieter than a gas-powered mower that can be over 90 decibels.

The brushless motor design eliminates high-pitched sounds resulting in a more pleasant mowing experience. Additionally, the mower deck helps dampen vibrations and mechanical noise. When operating, users will appreciate the quieter volume that enables conversations, phone calls, or listening to music while mowing. This differs from gas mowers that necessitate hearing protection with their sustained high-decibel operation.

Combined with the lack of engine noise, the Greenworks mower’s noise rating makes it a top choice if you want a peaceful, quiet mowing session without loud disruptions. Neighbors are less likely to be bothered as well. The noise reduction allows for mowing early mornings or evenings without excess noise pollution. Ultimately, the quieter 70 decibel operating volume is a major selling point for those wanting a clean, green electric mower rather than a noisy gas alternative.

Ease of Use

The Greenworks MO48L4422 cordless electric lawn mower is very easy to use and maintain. The controls are straightforward with simple buttons to turn the mower on/off and adjust the cutting height.

Controls

The mower has an easy push button start that instantly engages the motor. Speed can be set to either high or low depending on preference and conditions. It also features a safety key that must be inserted for operation. The entire control panel is conveniently located and labeled for intuitive use.

Folding/Storage

Folding and storing the MO48L4422 is simple with its two-step folding handle design. It stands upright for compact vertical storage, taking up very little garage or shed space. Unfolding it when ready to mow again takes just seconds. Its lightweight body at only 52 lbs also makes lifting and moving the mower easy.

Maintenance

Little maintenance is required thanks to the brushless motor and no oil/gas to worry about. The 21" cutting deck is made of rust-proof aluminum so it won't corrode over time. Occasional cleaning under the deck to remove clippings buildup is all that's needed. The long-lasting 4AH batteries deliver reliable power for years before needing replacement.

Cut Quality

The Greenworks 48V MO48L4422 mower has excellent cut quality for most residential lawns. The steel 21-inch cutting deck can easily handle small to medium sized yards. The blades are adjustable through 7 height settings between 1.5 - 3.25 inches, allowing you to customize the height for your grass conditions.

The deck does an excellent job cutting grass evenly without stray long blades. It maintains uniformity whether mowing finer fescue or thicker zoysia grass types. Part of the even cutting performance comes from the brushless motor's consistent power output.

Mulching and bagging both work very well with this electric mower. For mulching, the blade does a nice job of repeatedly cutting and re-cutting grass into smaller pieces that then get dropped down to the soil. The mower has enough power to handle moderate mulching tasks, though very thick or wet grass can bog it down in the highest settings.

For bagging, the 10 gallon rear bag fills up evenly and collects clippings efficiently during mowing sessions. The bag is easy to empty and most users get 20 to 45 minutes of mowing time before needing to empty. There is minimal clipping spillage when operating on flat, even terrain.

Overall, the cutting capability of this Greenworks mower delivers solid performance for most home lawns. It may struggle with extremely tall or wet grass. But for routine yard maintenance, users report reliably getting an even, uniform cut each mowing session.

Warranty and Support

The Greenworks MO48L4422 comes with a 4-year warranty that covers any defects in materials or workmanship for 4 years from the date of purchase. The warranty is valid only if the product is used for ordinary household use according to the instructions provided. The warranty does not cover damage from misuse, abuse, improper maintenance, or normal wear and tear.

Greenworks has a customer support team available 7 days a week by phone, email or chat on their website. They have extensive DIY resources on their support site including an FAQ section, instruction manuals, part lists and troubleshooting guides. Customers report positive experiences with knowledgeable and friendly support representatives who can help diagnose issues and process warranty claims.

Replacement parts are readily available on the Greenworks website or Amazon. The most commonly replaced parts like blades and batteries have easy ordering options.

Overall, the 4-year warranty provides peace of mind for customers. And Greenworks' customer service channels make it easy to get help when needed.

Pros and Cons

Pros

• Powerful 48V brushless motor provides excellent cutting power
• Large 21" cutting deck allows you to mow more grass in one pass
• Cordless operation provides freedom of movement and no dealing with extension cords
• Self-propelled rear-wheel drive makes it easy to maneuver
• Quiet operation at only 68dB for noise-sensitive areas
• 2 included 5Ah batteries provide up to 60 minutes of runtime
• Fast battery charging in just 60 minutes
• Lightweight and compact design at only 57 lbs

Cons

• Batteries and charger sold separately, adding to initial cost
• Smaller cutting deck than gas mowers, less suitable for larger lawns
• Battery charge limits continuous mowing time before recharging
• Not meant for cutting thick or overgrown grass
• No options for mulching, bagging, or side discharge
• Higher price tag than some competing electric mowers