BenQ GV31

Name: BenQ GV31
Brand: BenQ
Price: 599 USD
Availability: Discontinued

A battery projector built around its speaker: a 2.1 system with an 8 W woofer in a 3.7 lb cylinder that runs three hours off the internal cell. The picture is a modest 300 ANSI lumens at 1080p, but nothing else this size sounds close to as good.

Approx. price

~$599

snapshot, not a live price

Brightness

300

ANSI

Screen at 10 ft

115 in

16:9 diagonal, estimated from the throw ratio

Light source

LED

20,000 h rated

Best for: Camping, a patio, or any screen with no power outlet nearby

Specifications

Type: Portable
Imaging tech: DLP
Native resolution: 1080p
Max signal: 1080p60
Max refresh: 60 Hz
Light source: LED
Light source life: 20,000 hours
Throw ratio: 1.2:1
Zoom: Fixed lens
Dynamic contrast: 100,000:1
Built-in streaming: Android TV
Speakers: 8 W total
HDMI: 2 × HDMI 1.4b
Fan noise: 28 dB
Weight: 3.7 lb
Battery: 180 minutes
Released: 2023

Features

3-hour internal battery
2.1 audio with 8 W woofer
135-degree tilting cradle
Android TV dongle included
Auto focus and keystone
Bluetooth speaker mode

What it does well

A three-hour internal battery runs a full film with no outlet anywhere
The 2.1 speaker system with a dedicated woofer is the best built-in audio of any battery projector here
3.7 lb with a carry design and a tilting cradle
It doubles as a Bluetooth speaker with the lamp off

What it gives up

BenQ has recalled every GV31 sold from July 2023 through May 2026 over a battery that can overheat, and tells owners to stop using it until the battery is replaced
300 ANSI lumens is strictly a full-dark number
HDMI 1.4b — it will not accept a 4K signal at all
45 ms input lag rules out gaming, and it supports no HDR format at all

The two lists above are read off manufacturer specifications and published measurements, not from owner reports. Where owner discussion has been collected it appears separately below, so the two are never mistaken for each other.

What owners say

No owner discussion has been collected for the BenQ GV31 yet. The pros and cons above are read off manufacturer specifications and published measurements, not from owner reports, and this section will stay empty until there is something real to put in it.