Dangbei Freedo
#32 in 1080p and underFull review
A quiet battery projector with Google TV for camping, backyards and bedrooms. Not one for gaming.
Amazon $439$439
The Dangbei Freedo is the better projector overall, rated 3.3 to 3.2. The Dangbei Freedo leads on setup. The HAPPRUN 510G wins on value and resolution. The HAPPRUN 510G costs $189.01 less ($249.99 vs $439).
HAPPRUN 510G
#52 in 1080p and underFull review
A low cost Google TV projector for a dark room, for buyers who want licensed Netflix without a stick. Setup is manual and the speaker is weak.
Amazon $249.99$249.99
Prices were last checked October 29, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Dangbei Freedo for setup (Autofocus, auto keystone vs Manual focus and keystone).
- Choose the HAPPRUN 510G for value ($0.62 per lumen vs $0.98 per lumen) and resolution (1920 x 1080 native vs 960 x 540 native, pixel shift to 1080p).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 1080p and under projector; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dangbei Freedo | HAPPRUN 510G |
|---|---|---|
| Overall rating | 3.3/5 | 3.2/5 |
| Brightness 25% | 35 450 ISO 21118 lumens | 31 400 ANSI lumens |
| Value 15% | 3 $0.98 per lumen | 44 $0.62 per lumen |
| Resolution 10% | 70 960 x 540 native, pixel shift to 1080p | 100 1920 x 1080 native |
| Streaming 15% | 100 Google TV with licensed Netflix | 100 Google TV with licensed Netflix |
| Setup 10% | 60 Autofocus, auto keystone | 0 Manual focus and keystone |
| Light life 10% | 100 30,000 hour LED | 50 light source life not published (neutral score used) |
| Gaming 10% | 50 input lag not published (neutral score used) | 50 input lag not published (neutral score used) |
| Warranty 5% | 0 1-year warranty | 0 1-year warranty |
Independent measurements
Dangbei Freedo
| Tested by | Brightness | Input lag | Contrast | Conditions |
|---|---|---|---|---|
| ProjectorCentral | 367 lm | 56.1 ms | - | 367 ANSI lumens in Game picture mode, High Performance power; 315 in Standard picture mode. Lag at 1080p/60 in Game mode with Game Mode on. |
HAPPRUN 510G
No independent test published yet.
Specifications
| Dangbei Freedo | HAPPRUN 510G | |
|---|---|---|
| Picture | ||
| Brightness | 450 ISO 21118 | 400 ANSI |
| Native resolution | 960 x 540 | 1920 x 1080 (1080p) |
| Picture resolution | 1080p (pixel shift from 960 x 540) | 1080p |
| Display | DLP | LCD |
| Light source | LED | LED |
| Light source life | 30,000 hours | - |
| HDR | HDR10, HLG | HDR10 |
| Color gamut | 90% DCI-P3 | - |
| Placement | ||
| Throw | Standard throw (1.2:1) | Standard throw |
| Largest image | 180 in | 300 in |
| Autofocus | Yes | No |
| Auto keystone | Yes | No |
| Obstacle avoidance | Yes | - |
| Auto screen fit | Yes | - |
| Optical zoom | None | - |
| Streaming and gaming | ||
| Built-in apps | Google TV, licensed Netflix | Google TV, licensed Netflix |
| Top refresh rate | 60 Hz | - |
| HDMI ports | 1 | 1 |
| eARC | No | - |
| Speakers | 6 W | 5 W |
| Build | ||
| Battery | 2.5 hours | None |
| Fan noise | 24 dB | - |
| Power | 55 W | - |
| Dimensions | 5.2 x 4.3 x 9.4 in | 240 x 210 x 96 mm |
| Weight | 3.1 lb | 3.5 lb |
| Warranty | 1 years | 1 years |
| Released | 2025-01-07 | 2025-09 |