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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 (typical) Projector Native Resolution Noise Level Projector Brightness Release Date
£25.64 Electricity cost over 5 years. Calculate
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£735.44
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5 Reasons For

Good Brand

Acer is one of the superior data projector brands according to average user and expert review score data that we have collected for all multimedia projectors.

WXGA (1280x800) Projector Native Resolution

The highest resolution of the K138STi is WXGA (1280x800). That's over two times the resolution of the most common projector native resolution of WVGA (854x480).

A WXGA (1280x800) projector native resolution is in fact the best resolution amongst all battery powered projectors that were launched around the same time as the K138STi.

A WVGA (854x480) projector native resolution is the worst resolution across similar types of data projector.

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Fairly Big Uniformity

The uniformitys of data projectors that have been available for around the same time as the K138STi range from 70% to 900%. With a uniformity of 90 percent, the K138STi has a quite big uniformity compared to most of the other projectors that were released around the same time as the K138STi.

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MP3 Audio Formats Supported

This data projector audio formats supported, which is the most commonly found audio formats supported on new data projectors.

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Very Low Power Consumption (economy Mode)

The K138STi has a quite low power consumption (economy mode) (only 38 Watts) compared to most of the other recently released similar spec projectors. The average power consumption (economy mode) of projectors that are a similar age to the K138STi is 250W, and the power consumption (economy mode)s range from 38W to 500W.

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6 Reasons Against

Does Not Support 3D

Most similar spec projectors that were released around the same time as the K138STi do not support 3D. The K138STi is no exception to this as it too does not support 3D.

We think you might also be interested in alternative projectors which also support 3D including the Benq GS1[plb_3931757_price] which also has a higher rating.

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Does Not Support Full HD

The K138STi does not support full HD. Most of the other battery powered projectors that have been on the market for the last year also do not support full HD.

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Does Not Support Wi-Fi

The K138STi does not support wi-Fi. Most of the other battery powered projectors that were launched in the last year also do not support wi-Fi.

Alternative projectors which also support wi-Fi that you might also want to look at include the Sony MP-CL1A[plb_4047328_price], or the Pico Genie M400 Pro[plb_3288158_price].

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Very Small Battery Capacity

At only 400 milliamperes * hour, the K138STi has a fairly small battery capacity compared to most of the other similar spec multimedia projectors that have been around for a comparable time to the K138STi. The battery capacitys of recently released battery powered projectors range from 400mAh to 16,000mAh, and the average battery capacity is 5,900mAh.

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Very Dim Projector Brightness (economic Mode)

The average projector brightness (economic mode) of latest data projectors is 2,500 ANSI lumens. With a projector brightness (economic mode) of only 640 ANSI lumens, the K138STi has one of the dimmer projector brightness (economic mode)s amongst multimedia projectors of this age.

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Very Small Optical Zoom

With an optical zoom of only 1 times zoom factor, the K138STi has a quite small optical zoom compared to most of the other latest comparable spec data projectors. The optical zooms of multimedia projectors that have been around for a similar time to the K138STi range from 1x to 1.8x.

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6 Other reasons to consider the Acer K138STi

Released Eleven Months Ago

It was eleven months ago when this data projector was released.

Average Running Costs

Based on average usage levels and energy prices we estimate that the 1 year running cost of the K138STi is £26, which is typical compared to the other 10 data projectors that have been around for the last year.

1280 X 800 Supported Graphics Resolutions

The K138STi supports a maximum resolution of 1280 x 800. That's 47% less resolution than a 1600 x 1200 (UXGA) projector, which is the most frequently found resolution supported by new projectors.

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Average Noise Level

The K138STi has a pretty standard noise level (33 decibels) compared to most of the other data projectors that were released around the same time as the K138STi.

If you would consider a projector with a louder noise level then you might want to look at the Optoma W330[plb_3342157_price] (29dB).

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Average Battery Life (max)

The K138STi has a fairly standard battery life (max) (2.6 hours) compared to most of the other new battery powered projectors.

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Average Projector Brightness

The K138STi has a relatively typical projector brightness (800 ANSI lumens) compared to most of the other battery powered projectors that have been around for the last year.

If this data projector projector brightness is not bright enough for you then you might want to look at the Sony VPL-DX270[plb_3840118_price] (3,500 ANSI lumens).

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Specification

Projector
Contrast Ratio (typical)
Projector Native Resolution
Projector Brightness
Keystone Correction, Vertical
Uniformity
Vertical Synchronization (min)
Horizontal Synchronization (max)
Vertical Synchronization (max)
Horizontal Synchronization (min)
Projector Brightness (economic Mode)
Zoom Ratio
Projection Distance
Supported Aspect Ratios
Screen Size Compatibility
Native Aspect Ratio
Projection Technology
Number of Colours
Lamps
Lamps Quantity
Service Life of Lamp (economic Mode)
Lamp Type
Service Life of Lamp
Lens System
Optical Zoom
Throw Ratio
Digital Zoom
Focus
Video
Supported Graphics Resolutions
3D-Ready
HD-Ready
Ports & Interfaces
PC Audio in
PC Audio Out
PC in (D-Sub)
USB 2.0 Ports Quantity
Ethernet LAN (RJ-45) Ports
HDMI Ports Quantity
VGA (D-Sub) Ports Quantity
AC (power) in
Networking
Ethernet LAN
Storage
Compatible Memory Cards
Card Reader Integrated
Performance
Noise Level
Noise Level (economic Mode)
Multimedia
Audio Formats Supported
Video Formats Supported
RMS Rated Power
Number of Built-In Speakers
Design
Ceiling Mountable
Colour of Product
Product Type
Power
Power Source
Power Consumption (typical)
Power Consumption (economy Mode)
AC Input Voltage
Battery
Battery Life (max)
Battery Technology
Battery Capacity
Operational Conditions
Operating Relative Humidity (H-H)
Operating Temperature (T-T)
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.

Product Identifiers

Manufacturer Part Numbers acer k138, acer k138s, acer k138st, acer k138sti, acer acerk138, acer 1280x800, acer acerk138s, acer acerk138st, acer acerk138sti
Barcodes 04713392225673

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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
£ 587.98
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

Asus ZenBeam E1 vs Acer K138STi

Asus ZenBeam E1 vs Acer K138STi
Asus ZenBeam E1 Acer K138STi
£ 279.25
Three Times Lighter
£14.26 Cheaper to Run
Bigger Battery Capacity
Longer Battery Life (max)
Five Times Dimmer Projector Brightness
One Less Number of Built-In Speakers

Epson EX7240 vs Acer K138STi

Epson EX7240 vs Acer K138STi
Epson EX7240 Acer K138STi
£ 404.28
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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