Sun Joe iON16LM

40-Volt 4.0-Amp 16-Inch Brushless Cordless Lawn Mower

Final Score
Final Score
A score from 1 to 100 based on reviews all over the web combined with our team of experts.
3.9/5 from
 568 users
Sun Joe iON16LM
We spent 8.9 hours reading reviews from customers and experts. In summary, here’s what users think:

9 reasons to buy

  • A large number of users were impressed that the Sun Joe iON16LM cut thick grass very well thanks to its powerful brushless motor.
  • The mower is very lightweight making it easy to push and very maneuverable.
  • A number of purchasers appreciated that the mower is easy to set up out of the box.
  • A good number of owners noted that the bag was well designed and easy to attach or detach. It even had an indicator showing if the bag is full.
  • The mower is also easy to start. Just hold the start button and pull the lever and you’re good to go.
  • A few purchasers liked that the charging station and battery had indicators showing the batteries charge state.
  • The mower is reasonably priced.
  • One buyer liked the mower’s build quality and aesthetic appearance.
  • A consumer loved that the mower continued to cut despite pushing it at a fast pace.

3 reasons not to buy

  • A handful noted that the Sun Joe iON16LM was much quiet than a gas-powered mower. However, it was louder than other cordless mowers.
  • The mower does not have an option for side discharge as is.
  • At least one purchaser mentioned that the mower did not mulch as well as it cut.

Bottom Line

A vast majority of reviewers found the Sun Joe iON16LM a solid choice for a cordless mower. It exceeded expectations with how well it cut thick and damp grass. Its lightweight design made it very easy for people of all ages to use. It did not need self-propel which helped extend its battery life. It’s bagger although small in size was very easy to attach and remove. On the downside, users noted that they needed to purchase a separate accessory to get the mower to mulch and it did not mulch very well. Overall the iON16LM performs better than expected when bagging and is recommended for lawns of up to 5000 square feet.


Additional information


Sun Joe

Cutting Width



Max Cutting Height

Min Cutting Height

Mower Type


Power Source



2 Years


37.3 lbs

Additional Info

ETL Approved, Energy Star Certified, Deck Material: ABS Plastic, iONMAX Battery System, EcoSharp Technology

Video Reviews

3.9/5 based on
568 reviews

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Tips for Sun Joe iON16LM

  • The mower has an average run time of 40 minutes but can vary depending on grass thickness. It is recommended to purchase a second battery for uninterrupted use.
  • The mower can only be used with the bag out of the box. For mulching, purchase a Discharge Chute Accessory here.
  • Check that lower arms are correctly positioned during assembly to ensure proper height adjustment.



Q: Does the mower come with a battery and charger?
A: Yes. Both will be included.

Q: Can I use the 40v battery from my Snow Joe Snow Blower with the iON16LM?
A: Yes the 40v battery will work for both.

Q: How long does it take to fully charge the battery?
A: It is recommended to charge the battery for 5 hours after the first use then 2 hours on the next charge

Q: What is the mower’s height when folded down for storage?
A: The mower folds down to 18 inches.

Q: Is this mower self-propelled?
A: No, this mower is not.

Q: Can the mower pick up leaves?
A: Yes. The mower can pick up leaves as well as a gas-powered mower.

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