Remington MB4040 Lithium Ion Mustache and Beard Trimmer Review

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Having an efficient beard and mustache trimmer is important to anyone wanting to keep a well maintained appearance.

However, the most common downfall of battery operated mustache and beard trimmers is the short amount of time these trimmers actually work on a single charge.Remington MB4040 Lithium Ion Beard Trimmer

Remington claims to have solved that problem with the Remington MB4040 Lithium Ion Mustache and Beard Trimmer which sports some nice features and a lithium Ion battery which can hold a much longer charge compared to more traditional trimmer batteries.

So, let’s take a more in-depth look at the Remington MB4040 features and see if it lives up to its claims of being an efficient trimmer.

Features At A Glance

  • Powered by a strong Lithium Ion battery.
  • Titanium coated blades that are self oiling and sharpening.
  • Runs 160 minutes on a full charge.
  • 3 precision ground blades.
  • 9 different length settings.
  • Ergonomic shape for more comfortable handling.
  • Quick blade release for easy cleaning under running water.

Length settings and Combs

The MB4040 has a a zoom wheel that allows you to “dial” in the length of the setting you want. It comes with 9 different length settings which are 1.5mm, 2.5mm, 4mm, 5.5mm, 7mm, 9mm, 11mm, 14mm and 18mm.

Once you set the wheel in the desired position, it holds the setting very well by clicking firm and the number of your setting will appear on the length indicator, thus avoiding any possibility of a mistake.

It also comes with three different heads, each for trimming a beard, a goatee and for the stubble look. The stubble head is supposed to gives you a 5 o’clock shadow look while the goatee head is designed to allow you to trim closer to the lip area.

My immediate reaction to the length settings is that it may not be suitable for some who want to maintain a very short stubble since a minimum setting of 1.5mm could be a bit long for you.  Still, you have the option to use the trimmer without the comb but that might be too short. This trimmer however, is ideal for shaping or styling a long beard or a goatee.

During my research, I saw that some people commented about how they had to pass it several times to catch all the hair. Simple answer to that is that as the beard hair grows in different directions, it is always best to comb the hair well before trimming. I comb my beard even during the trim to make sure nothing is curled.

It also performs well to trim your body hair. Some users that have trimmed their body hair using this device have been satisfied with the results.

Blades, Cleaning and Maintenance

This Lithium Ion beard trimmer comes with titanium coated blades that are self-sharpening and oiling so that absolutely no maintenance is required with the exception of cleaning the trimmer after use.

The trimmer is not washable but there is an easy release button for the blade which can be removed and it won´t do any harm to wash the blade.

As mentioned above the trimmer does not require any oiling, however, if you do wash the blade, it would be advisable to put couple of drops of oil that comes with the device.

If you are trimming a long beard, you may get a build up of cut hair in the trimmer comb. If so, remove the comb after switching off the trimmer, and clear the hair by brushing. Clogging the comb with a lot of cut hair would not only reduce its cutting performance but it may also give you an uneven trim.

Battery, Power and Cord

The MB4040 comes with a rechargeable lithium Ion battery and runs for up to 160 minutes on a full charge which will give you ample trimming sessions without having to worry about charging.

Users have reported this trimmer running up to a month or more of daily trimming on a single charge with some juice to spare.

The Remington MB4040 is a cordless beard and mustache trimmer. It does of course come with a charging cord and you can use the trimmer with the cord plugged in. So, it´s convenient from that point of view and you don´t need to wait for it to get charged if you are in a hurry.

The device is 120V only, so for any trips to Europe you will have to buy an adaptor which will convert to 220V.

Additional Features

The MB4040 has a couple of additional features worth mentioning.

It has a rubberized no slip grip which makes this trimmer easy to use while trimming without having to worry about it slipping out of your hands. It is also easy to clean as there is a quick release for the heads and you can rinse off to remove any hair that are clinging to them.

The three precision blades which come with the trimmer are great for edging and defining beard, sideburns as well as cleaning the neck area. .

What Comes in the Box

When you purchase the MB4040, you should find the following items by opening the box.

  • MB4040 Beard and Mustache Trimmer.
  • Beard attachment.
  • Goatee attachment.
  • Stubble attachment.
  • Charger.
  • Instructions Manual.

Customer Reviews & Ratings

Reviews for the Remington MB4040 Mustache and Beard Trimmer are good with most users really liking this trimmer.

While some users did see problems with the Remington MB4040, most users felt that this was a fine trimmer that got the job done and got it done well.

The problem some users mentioned was that it gave them an uneven trim which was surprising since a great majority did not have any such problem. Quite honestly, there are so many factors which can cause an uneven trim like the direction of hair, the coarseness or if the hair is curly, just to name a few.

In any case, one should expect to pass the trimmmer in different directions to get the best results and this would apply to all trimmers.

Features most liked by the users include:

  • Simply on and off switch.
  • Ease of cleaning.
  • Holds a charge for a long time.
  • Made of good quality materials and is sturdy.
  • Attachment stays firmly in place.
  • Quiet operation.

Some users felt that with 3 interchangeable combs included, Remington should have provided an accessory bag with this trimmer.


The ratings for the Remington MB4040 are overall quite good, with some review sites giving higher ratings than others. When you take all the reviews together, this trimmer scores well in ratings across the board.


There are plenty of advantages that make this beard and mustache trimmer worth considering. These advantages include:

  • The attachments stay in place with no shifting around.
  • The adjustments lock in place easily.
  • Made of good quality materials.
  • Holds a charge for an exceptionally long time.
  • Less attachments than other trimmers to keep track of.
  • Pretty quiet operation.


Users didn’t find a lot that they didn’t like regarding this trimmer, though there are a couple of disadvantages you may want to consider:

  • It may need more passes with this trimmer than with some others to get the even trim you are seeking. (We have discussed this point at length above. )
  • It doesn’t come with any type of pouch or base to hold the trimmer and its attachments.

Dimensions & Storage

The Remington MB4040 lithium Ion mustache and beard trimmer does not come with either a charging stand or a travel pouch of any kind. So, if you are planning on traveling, it would be wise to invest in an inexpensive travel pouch to keep the heads all together and protect the trimmer from the damage it may suffer bouncing around in your suitcase.

This trimmer is just the right size for trimming up beards and mustaches as well as trimming those sideburns to the proper length. It measures 1.6”x 1.7”x 6.7”

Price & Warranty

The trimmer comes with a 2 year warranty.

The price of the Remington MB4040 is the low or low mid-range for beard and mustache trimmers, making it a good value for what you get.


The Remington MB4040 Mustache and Beard Trimmer seems to be one of the best rated trimmers produced by this company. While not all users were thrilled with this trimmer, the vast majority of users felt that it did everything it was supposed to do and did it quite well.

My only concern is for those who only want to maintain a very close stubble. It will do a good job for a 3 to 4 days stubble, but if you are just looking for a 5 o´clock shadow look, then this is not the most appropriate trimmer for you.

The only way you could achieve this would be to use the stubble head without the guard but from an overall research, people have not shown 100% satisfaction to this.

For all other beard trimming purposes as well as body grooming, it offers lots of options and at a good price, backed up by the famous Remington brand known to produce good quality products..

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