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Sun Joe iON 40-Volt Cordless 16-Inch Lawn Mower w/ Brushless Motor

iON16LM $399.99
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Product Description

MOW POWER TO YA! Ditch the gas, oil, noxious fumes, pull-cords, and extension cords and meet the newest addition to the iON tool series - the Sun Joe® iON16LM cordless lawn mower! Powered by the same rechargeable 40 V EcoSharp® battery system, the iON16LM utilizes the most advanced lithium-ion technology to deliver up to 40 minutes of whisper-quiet runtime with zero carbon emissions for cleaner air. This cordless dynamo is also engineered with a powerful brushless motor for increased battery efficiency, optimal motor performance and extended motor life (up to 2000 hours!) to keep your iON mowing strong season after season.


Ideal for small to mid-sized lawns, the iON16LM starts instantly with a simple push of a button and its ergonomic handle maximizes user comfort during use. Its compact design features rugged front and rear all-terrain wheels that make it easy to maneuver in tight spaces. Quickly adjust the cutting height of your grass with the 6-position height adjustment lever, which tailors cutting heights from 1.18 inches up to 3.15 inches. The 9.25-gallon grass bag conveniently detaches to dispose of grass clippings. The iON16LM is backed by a full two-year warranty, is ETL approved, and Energy Star certified. GET EQUIPPED® this spring with the Sun Joe® iON16LM – the easy, convenient and cord-free way to care for your lawn.

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  • 40 V 4.0 Ah EcoSharp® rechargeable lithium-ion battery provides up to 40 minutes of whisper-quiet runtime and is compatible with all iON tools
  • No pull cords, gas, oil, tune-ups, carbon emissions or tangled extension cords
  • Powerful brushless motor increases battery efficiency, maximizes motor performance, decreases noise and vibration and extends motor life
  • Compact design ideal for small to mid-sized lawns
  • 6-position height adjustment lever tailors grass cutting height from 1.18 to 3.15 inches
  • Full 2-year warranty; ETL approved; Energy Star certified
Sun Joe iON 40-Volt Cordless 16-Inch Lawn Mower w/ Brushless Motor Features
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UPC # 810829021649 Maximum Cutting Height (in.) 3.15
Assembled Depth (in.) 48.4 Minimum Cutting Height (in.) 1.18
Assembled Height (in.) 42.9 Mulching Capability No
Assembled Weight (lb.) 37.3 No Load Speed (rpm) 3500
Assembled Width (in.) 17.7 Power Source Cordless
Bagger Capacity (gal.) 9.25 Rear Wheel Size (in.) 8
Battery Capacity (Ah) 4.0 Rust Resistant Deck Yes
Certifications and Listings CSA, Energy Star, ETL Size of Yard 1/4 - 1/2 Acre
Cutting Width (in.) 15 Sound Power Level 96 dB
Deck Cleanout No Start Type Battery
Deck Size (in.) 16 Terrain Sloped with Obstacles
Foldable Handle Yes Tool-free Adjustments Yes
Lawn Mower Type Walk-behind Voltage (V) 40
UPC # 810829021649
Assembled Depth (in.) 48.4
Assembled Height (in.) 42.9
Assembled Weight (lb.) 37.3
Assembled Width (in.) 17.7
Bagger Capacity (gal.) 9.25
Battery Capacity (Ah) 4.0
Certifications and Listings CSA, Energy Star, ETL
Cutting Width (in.) 15
Deck Cleanout No
Deck Size (in.) 16
Foldable Handle Yes
Lawn Mower Type Walk-behind
Maximum Cutting Height (in.) 3.15
Minimum Cutting Height (in.) 1.18
Mulching Capability No
No Load Speed (rpm) 3500
Power Source Cordless
Rear Wheel Size (in.) 8
Rust Resistant Deck Yes
Size of Yard 1/4 - 1/2 Acre
Sound Power Level 96 dB
Start Type Battery
Terrain Sloped with Obstacles
Tool-free Adjustments Yes
Voltage (V) 40
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How loud is my Sun Joe iON16LM?

Your Sun Joe iON16LM has a decibel rating of 96 dB.

To better understand this noise level, please refer to this chart for means of comparison:


Where is the serial number for registration located on my unit?

The serial number used to register your iON16LM Cordless Lawn Mower is located directly above the rear left wheel (from an operating perspective). It appears as a white sticker with black text on the grey plastic deck.

How long does the battery for my Sun Joe iON16LM Lawn Mower take to charge?

Your Sun Joe iON16LM Lawn Mower comes with a 40-volt EcoSharp® lithium-ion battery charger (Model# iCHRG40) that completely charges your battery in up to 2 hours.

How does a brushless motor compare to a traditional motor with brushes?

The iON16LM is equipped with a brushless motor. Without going into an engineering lesson, brushless motors are smarter, more powerful and more efficient than their old school brushed cousins. So when comparing cordless devices, you can’t just compare voltage. A lower voltage brushless motor is far better than a higher voltage, old school brushed motor. So a new cordless unit with a brushless motor will mean that it can perform better and last longer on a charge than a comparable unit with a traditional cordless motor.

What is the best measurement of a lithium-ion battery pack’s performance? How does the Snow Joe + Sun Joe EcoSharp 40 V 4.0 Ah lithium-ion battery pack (model iBAT40) compare to other lithium-ion battery packs in the market?

Without getting too technical, the best measure of a lithium-ion battery pack’s performance is its energy capacity, which is measured in watt-hours. To find the watt-hours of a battery pack, multiple the voltage by the amp-hours. For example, the Snow Joe iON18SB 40 V 4.0 Ah 18-inch cordless snow blower runs on a lithium-ion battery that delivers a 160 watt-hour energy capacity (40 V x 4.0 Ah). In comparison, competitor models of cordless tools that also employ a 40 V lithium-ion battery may only be telling you half the story. They cleverly disguise a seemingly “more powerful” battery pack by tacking on a large voltage rating without disclosing the amp-hour rating information, which has been found in some cases to be, at best, only 2.6 amp-hours. A battery with the same voltage rating, but a lower amp-hour rating will have a lower energy capacity, which will significantly impact your cordless tool’s performance. Comparing the Snow Joe + Sun Joe EcoSharp 40 V 4.0 Ah lithium-ion battery pack to the 40 V 2.6 Ah competitor lithium-ion battery pack, the EcoSharp battery provides about a 1.6 fold increase in energy capacity (160 watt-hours versus 104 watt-hours). So, when comparing battery packs, it’s not only voltage that matters in terms of cordless tool performance. Know your battery’s amp-hour and watt-hour rating to get a true assessment of what your battery can really do.

How long will the battery in my Sun Joe iON16LM Lawn Mower run for?

Your Sun Joe iON16LM Lawn Mower comes with a 40-volt 4.0 Ah lithium-ion battery (Model# iBAT40) that delivers up to 45 minutes of whisper-quiet run time.

Can the EcoSharp 40 V 4.0 Ah battery pack (model iBAT40) and the EcoSharp PRO 40 V 5.0 Ah battery pack (model iBAT40XR) be used interchangeably with all iON tools?

Yes, both the EcoSharp 40 V 4.0 Ah battery pack (model iBAT40) and the EcoSharp PRO 40 V 5.0 Ah battery pack (model iBAT40XR) can be used with all iON and iON PRO series tools. Both batteries also utilize the same 40 V EcoSharp charger (model iCHRG40).

Why does the lower handle not fit on the unit?

The handle is unidirectional and must be assembled right-side-up. On the handle are three raised notches that must be facing up when the handle is installed. Line up one of the three notches on the handle with the single notch on the unit, and secure with the knobs.

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