Our take
The LG CineBeam PH450UG is a native 1280 × 720 DLP projector with a 0.29:1 ultra-short-throw design and an embedded battery. LG lists an RGB LED source, a 450-lumen output figure, up to 2.5 hours of battery use, vertical auto keystone, Miracast/WiDi screen sharing, HDMI/MHL, and USB-A. This combination suits a room where a projector must sit close to the wall and may be moved away from a fixed mount. The panel is HD rather than Full HD, and the output is not identified as ANSI, so screen size and room-light expectations should remain modest.
A close-wall, battery-capable home setup where simple placement matters more than Full HD or a verified ANSI rating..
It is not for a buyer who requires native Full HD, a verified ANSI brightness value, or a documented streaming-app platform. Confirm that a compatible phone or laptop supports the wireless screen-sharing route you plan to use.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The 0.29:1 ratio supports placement much closer to a wall than a conventional projector.
- The built-in battery makes temporary viewing possible without routing power for every session.
- HDMI/MHL and documented Miracast/WiDi add wired and wireless source choices.
What to weigh up
- The native 1280 × 720 image has less detail than a Full HD panel.
- LG's 450-lumen figure has no ANSI method in the checked specification sheet.
- A wireless sharing feature is not the same as installed video-streaming apps.
Specifications and exact model details
The key details
| Model covered | PH450UG |
|---|---|
| Image format | Native 1280 × 720 DLP |
| Rated light output | 450 lumens; measurement method not stated as ANSI |
| Placement | 0.29:1 UST; battery playback up to 2.5 hours |
Performance figures are manufacturer claims. Source checked October 16, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Wall-near placement is the defining fit
LG specifies a 0.29:1 throw ratio and describes an 80-inch image from roughly 33 centimeters away. That relationship changes the furniture plan: the projector can sit on a low stand near the wall rather than at the back of the room. It still needs careful alignment and a suitable flat surface, and the screen size and image geometry depend on the distance and angle. This is materially closer placement than Acer H7550ST's 0.69–0.76 ratio. Measure the wall, cabinet depth, and intended image before deciding that either projector will fit.
Battery operation adds flexibility but not room brightness
LG's product information gives an internal battery with up to 2.5 hours of operation. That can make it easier to move the PH450UG between a bedroom, a temporary presentation, or a patio where a nearby outlet is inconvenient. Runtime is a manufacturer claim and depends on the mode and battery condition of an individual unit. The battery does not increase the light output or replace a careful room-light assessment. For a longer movie session or a larger image, plan for AC power or compare a fixed lamp projector with a sourced output method.
Understand the HD panel and untyped light figure
The specification sheet identifies native 1280 × 720 DLP and a 450-lumen figure, but it does not label that number ANSI. The saved profile therefore keeps comparable ANSI output unknown. The resolution is also different from a 1920 × 1080 Full HD projector such as the BenQ HT4050 or Miroir M289. A higher-resolution input does not change the PH450UG's native pixel grid. Buyers should compare the models by their documented detail and output basis, then think about how much image size and ambient light the intended space requires.
Match the source to Miracast, WiDi, or HDMI
LG documents screen sharing with compatible Miracast/WiDi devices, HDMI/MHL input, USB-A, and Bluetooth audio output. A source's wireless protocol support matters: a phone without a compatible screen-sharing path may need a wired adapter instead. The documentation does not establish built-in streaming apps, so use an external source if you need a video service. Bluetooth sound output can connect to separate audio equipment, while the HDMI/MHL port supports an appropriate video source. Check exact device compatibility before relying on a wireless connection as the only way to play content.
A portable LED design still needs unit checks
The RGB LED source avoids the replaceable-lamp workflow of the Acer H5360 or BenQ HT4050, but the saved LG material does not guarantee the condition of a used projector or its battery. Verify charging, focusing, keystone correction, HDMI/MHL, and the screen size at the planned distance. The specifications list a 40–80 inch range, with 80 inches at the noted close spacing. A close-wall projector can reveal wall texture and alignment issues more readily, so a smooth screen and square position still matter. This is model-documentation guidance, not a hands-on performance assessment.
Compare for your needs
Acer H7550ST offers Full HD at a longer short-throw distance. Miroir M289 also has battery power and Full HD, but its 1.2:1 ratio needs more room and its runtime text conflicts.
Find the video projector that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
Is the PH450UG native Full HD?
No. LG specifies a native 1280 × 720 DLP panel, which is HD resolution rather than 1920 × 1080 Full HD.
How close can it sit to the wall?
LG lists a 0.29:1 ratio and an 80-inch image at about 33 centimeters; measure the exact screen and placement.
Does Miracast mean it has streaming apps?
No. LG documents compatible screen sharing, but the reviewed PH450UG sources do not establish an integrated app platform.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- LG PH450UG product specification sheet and support material ↗ — checked October 16, 2026.
- LG PH450UG specification sheet ↗ — checked October 16, 2026.
- LG PH450UG U.S. support page ↗ — checked October 16, 2026.
- LG PH450UG product specifications ↗ — checked October 16, 2026.
The decision
Choose the PH450UG when close-wall placement and battery use solve the room problem. Accept its HD image and untyped 450-lumen figure, and verify source compatibility and the actual battery before relying on it.
Is it the right fit?
Check the exact model and today’s offers on Amazon.