How long does the battery last?

JBL does not publish a runtime figure in these specs, and the 34 Wh pack is modest for a 100 W speaker. Expect several hours at moderate volume and much less at full blast. Charge time is under 3.5 hours with the speaker off.

Is it loud enough for a backyard party?

Yes for a yard, patio or small hall. 100 W RMS through a 5.25-inch woofer and tweeter fills an outdoor space for a dozen or so people. For a large open field or a crowd of 50+, the bigger PartyBox 310 or 710 is the better fit.

Can I play music from a USB drive?

Yes. It plays MP3, WAV and FLAC files from USB, so you can run a playlist without pairing a phone. Bluetooth 5.4 is there for streaming from a phone or tablet.

The listed specs give no IP rating, so treat it as not weather-sealed. Keep it out of rain, pool splash and wet sand, and store it dry.

How does it compare to the original On-the-Go?

The 2 Plus adds Bluetooth 5.4 and USB FLAC playback and keeps the 100 W two-way setup. If you already own the first On-the-Go and only stream from a phone, the upgrade is minor. If you want lossless USB playback and newer Bluetooth, it is worth it.

How heavy is it to carry?

6.45 kg (14.22 lbs). That is fine for a short walk from the car but tiring on a long hike. There are no wheels, so plan on carrying it by hand.

JBL PartyBox On-the-Go 2 Plus Portable Party Speaker

Last price we saw

$349.95at Amazon, last seen Nov 1

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Our take on the JBL PartyBox On-the-Go 2 Plus Portable Party Speaker

The JBL PartyBox On-the-Go 2 Plus is a 100 W RMS portable party speaker with a 5.25-inch woofer and a tweeter, tuned for loud outdoor sound. It adds Bluetooth 5.4, USB playback of MP3, WAV and FLAC, and a 34 Wh battery that charges in under 3.5 hours. At 14.22 lbs it is carryable but not pocketable, and the built-in battery means the party moves with you. It sits in the middle of JBL's PartyBox line: bigger sound than the clip-size speakers, less bulk and output than the wheeled PartyBox 310/710 models.

Best forBackyard parties and tailgatesBeach, park and camping tripsSmall outdoor gatherings where outlets are scarce