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Acer K138STi
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Acer K138STi Projector

100000:1 WXGA (1280x800) 33dB 800 ANSI Lumens Mar 2016
Contrast Ratio Native Projector Resolution Noise Level Projector Brightness Release Date
£25.64 Electricity cost over 5 years. Calculate
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6 Reasons For

Acer Data Projectors Have Good Reviews

On average projectors made by Acer are rated 79%, which is in the top 58% of all data projector brands that we have analysed.

WXGA (1280x800) Native Projector Resolution

The highest resolution of the Acer K138STi is WXGA (1280x800). That's over two times the resolution of a WVGA (854x480) projector, which is the most frequently found resolution.

A WXGA (1280x800) native projector resolution is actually the best resolution across all similar spec data projectors that have been available for around the same time as the K138STi.

The worst resolution amongst comparable types of multimedia projector is WVGA (854x480).

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Fairly Big Uniformity

The Acer K138STi has one of the bigger uniformities (90 percent) amongst comparable spec projectors of this age. The smallest uniformity of similar spec multimedia projectors that have been around for around the same time as the K138STi is 75%, the biggest is 900%, and the average uniformity is 130%.

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Supports One Video Format

The number of supported video formats on the Acer K138STi is more than most similar spec projectors that have been available for around the same time as it. The most frequently supported video format is AVI, but this video format is not supported by this projector. The video formats H.264,MPEG1,MPEG2,MPEG4,VC-1,XVID,H.264,MPEG1,MPEG2,MPEG4,VC-1,XVID are also supported by this multimedia projector.

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Fairly Bright Projector Brightness

The Acer K138STi has one of the brighter projector brightness (800 ANSI lumens) amongst comparable spec projectors of this age. The average projector brightness of battery powered projectors that are a similar age to the K138STi is 790 ANSI lumens.

If you want a brighter projector brightness then you might also want to look at the Sony VPL-DX270[plb_3840118_price] (3,500 ANSI lumens).

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Very Low Power Consumption in Economy Mode

At only 38 Watts, the K138STi has a fairly low power consumption in economy mode compared to most of the other data projectors that were launched in the last year. The power consumption in economy mode of similar spec projectors that came out around the same time as the K138STi range from 38W to 680W.

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7 Reasons Against

Does Not Support 3D Image Projection

The K138STi does not support 3D image projection, although keep in mind that most of the other projectors that have been around for the last year also do not support 3D image projection.

Other multimedia projectors which also support 3D image projection that you might also want to consider include the Benq GS1[plb_3931757_price] which also has a higher rating.

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Does Not Support Full HD Projection

Like most of the other new comparable spec data projectors, the K138STi does not support Full HD projection.

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Does Not Support WiFi Connectivity

Like most of the other projectors that are a comparable age to the K138STi, the K138STi does not support WiFi connectivity.

Alternative multimedia projectors which also support WiFi connectivity that you might also want to look at include the Philips PPX3417W[plb_3347906_price], or the Pico Genie M400 Pro[plb_3288158_price].

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Running Costs Are Very High

The average 1 year running cost of the K138STi is £26 based on typical energy prices, which makes it one of the least economic to run recently released projectors.

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Very Small Battery Capacity

With a battery capacity of only 400 milliamperes * hour, the K138STi has a fairly small battery capacity compared to most of the other battery powered projectors that were launched around the same time as the K138STi. The battery capacity of newly released battery powered projectors range from 400mAh to 13,000mAh.

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Very Dim Brightness in Economy Mode

The brightness in economy mode of comparable spec multimedia projectors that have been on the market for the last year range from 640 ANSI lumens to 4,500 ANSI lumens. At only 640 ANSI lumens, the K138STi has a quite dim brightness in economy mode compared to most of the other multimedia projectors that are a comparable age to the K138STi.

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Very Small Optical Zoom

With an optical zoom of only 1 times zoom factor, the Acer K138STi has a fairly small optical zoom compared to most of the other recently released multimedia projectors. Across all the new projectors the optical zooms range from 1x to 1.8x.

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4 Other reasons to consider the Acer K138STi

Released Ten Months Ago

It was ten months ago when Acer released the K138STi.

1280 X 800 Graphics Resolution

The K138STi supports a maximum resolution of 1280 x 800. That's 42% less resolution than the most common graphics resolution of 1680 x 1050 (WSXGA+).

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Average Noise Level

At 33 decibels, the Acer K138STi has a pretty average noise level compared to most of the other battery powered projectors that were released around the same time as the K138STi.

If you are not bothered about having a louder noise level then you might want to consider the Optoma W330[plb_3342157_price] (29dB).

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Average Maximum Battery Life

At 2.6 hours, the K138STi has a relatively typical maximum battery life compared to most of the other latest battery powered projectors.

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Specification

Projector
Contrast Ratio
Native Projector Resolution
Projector Brightness
Vertical Keystone Correction
Uniformity
Minimum Vertical Synchronization
Maximum Horizontal Synchronization
Maximum Vertical Synchronization
Minimum Horizontal Synchronization
Brightness in Economy Mode
Zoom Ratio
Projection Distance
Supported Aspect Ratio
Compatible Screen Size
Native Aspect Ratio
Projection Technology
Supported Number of Colours Display
Lamps
Lamp
Service Life of Lamp in Economic Mode
Lamp Type
Lamp Service Life
Lens System
Optical Zoom
Throw Ratio
Digital Zoom
Focus Mode
Video
Graphics Resolution
3D-Ready
HD-Ready
Ports & Interfaces
PC Audio Input
PC Audio Output
D-Sub PC in Port
USB 2.0 Port
Ethernet LAN (RJ-45) Port
HDMI Port
VGA (D-Sub) Port
AC Power in
Networking
Ethernet LAN Connection
Storage
Memory Card
Integrated Card Reader
Performance
Noise Level
Noise Level in Economy Mode
Multimedia
Supported Audio Format
Video Format
RMS Rated Power
Built-In Speaker
Design
Ceiling Mountable
Colour
Product Type
Power
Power Source
Typical Power Consumption
Power Consumption in Economy Mode
AC Input Voltage
Battery
Maximum Battery Life
Battery Technology
Battery Capacity
Operational Conditions
Relative Humidity Operational Range
Operating Temperature Range
Weight & Dimensions
Weight
Height
Depth
Width

Running Cost

Hours of Use Per Day: hours
Show running costs over: years
Electricity cost when switched on £25.64
Electricity cost when on standby
@ £0.139 per kwh - Edit electricity price and usage
kwh per hour
kwh per hour left on standby
Electricity price £per kilowatt hour
Annual electricity price inflation %
Water cost when switched on
@ £0.003474 per litre - Edit water usage and price
litres per hour
Water price £per litre
Annual water price inflation %
Submit Energy Consumption Figures
Total running cost over 5 years £25.64
Running costs for this projector have been estimated based on other similar projectors. If you know how much electricity and water the Acer K138STiuses then please let us know by entering those figures in the boxes above.
0.13T
Running this projector over 5 years will generate 0.13 tonnes of carbon dioxide (CO2).
4
To offset that much CO2 you would need to plant 4 tree seedlings and grow them for 10 years.

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See How Other Projectors Compare to the Acer K138STi

Sony VPL-DX270 vs Acer K138STi

Sony VPL-DX270 vs Acer K138STi
Sony VPL-DX270 Acer K138STi
£ 521.09
Significantly Brighter Projector Brightness
71% Brighter Brightness in Economy Mode
Two HDMI Ports
Newer by Five Months
2W Lower RMS Rated Power
One Less Built-In Speaker

Philips HDP2510 vs Acer K138STi

Philips HDP2510 vs Acer K138STi
Philips HDP2510 Acer K138STi
£ 1,199.89
Higher RMS Rated Power
Two More HDMI Ports
Brighter Projector Brightness
Quieter Noise Level in Economy Mode
Shorter Lamp Service Life
More Expensive to Run Over Five Years by 152%

Epson EX7240 vs Acer K138STi

Epson EX7240 vs Acer K138STi
Epson EX7240 Acer K138STi
£ 644.35
Four Hundred and Sixteen Times Lighter
Vastly Brighter Projector Brightness
One More USB 2.0 Port
Shorter Service Life of Lamp in Economic Mode
£65.06 More Expensive to Run Over Five Years
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