Acer K138
Acer K138
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Overall Score

Acer K138

A cheap to run 100000:1 280 x 800 multimedia projector
100000:1 WXGA (1280x800) Yes 33dB Aug 2015
Contrast Ratio (typical) Projector Native Resolution 3D Noise Level Release Date

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Acer K138 Review

4 Reviews
Not Currently for Sale
Good Features
$21 Over 1 Year
Overall Score

Why Has it Scored 33?

It has not bad expert reviews but below average user reviews with an average overall rating of 56%.
At over a year old this multimedia projector is slightly out of date, and newer projectors with more up to date technology are available. View the latest projectors 2017.
This projector has running costs of only $21 over 1 year, which are in the cheapest 4% of all 1,756 data projectors that we have compared it to.
It has some good features, but is also missing a few features:
Has a carrying case
Only 280 x 800 resolution
Very dim projector brightness

Acer K138 Video Reviews

Acer K138 In-Depth Analysis


Very Good Brand

Based on 815 expert and user reviews (including 160 verified purchases), Acer has very good reviews for its projectors. Acer also has very good reviews specifically within its projectors range compared to other manufacturers. 92% of those that bought a Acer projector would recommend the product that they bought to other buyers.


Only 280 X 800 Resolution

This multimedia projector has a projector native resolution of WXGA (1280x800)|280 x 800, which is typical of many projectors.

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The Acer K138 is 3D-ready. Most of the other projectors also are 3D-ready.

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Has a Carrying Case

The Acer K138 has a carrying case. Most of the other multimedia projectors also have a carrying case.

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Very Dim Projector Brightness

The dimmest projector brightness of projectors is 12 ANSI lumens, the brightest is 85,000 ANSI lumens, and the average projector brightness is 3,700 ANSI lumens. The Acer K138 has one of the dimmer projector brightnesses (only 800 ANSI lumens) amongst multimedia projectors of this age.

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Fairly Long Service Life of Lamp

At 20,000 hours, the Acer K138 has a fairly long service life of lamp compared to most of the other projectors. The shortest service life of lamp of projectors is 20h, the longest is 40,000h, and the average service life of lamp is 6,700h.

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Does Not Support Full HD

The Acer K138 does not support full HD, although it is worth noting that most of the other projectors also do not support full HD.

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Has a Built-In Speaker(s)

The Acer K138 has a built-in speaker(s). Most of the other multimedia projectors also have a built-in speaker(s).

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Average Noise Level

At 33 decibels, the Acer K138 has a pretty average noise level compared to most of the other projectors.

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Released Over a Year Ago

This projector was released in October 2015.

Running Costs

Running Costs Are Very Low

The K138 has an average running cost of only $21 over 1 year based on average energy prices, which makes it one of the cheapest to run data projectors.

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Product Identifiers

Manufacturer Part Numbers acer p238840p, acer 1280x800, acer p251461p, acer k138sti
Barcodes 00887758634424, 00888863023677, 04713147866250, 04713147866267, 04713147930852, 04713392225680
Cheaper to run by $10.94
User reviews are significantly better
Longer service life of lamp
Two times dimmer projector brightness
Better expert reviews
Hugely better user reviews
10h longer service life of lamp