Receiver-Powered vs Internal Battery: Which RC Speaker Setup Is Right for Your Rig
Most of our speakers come in two versions: receiver-powered or internal battery. It's the one real decision you have to make before ordering, and the right answer depends on your rig more than your preference.
The quick answer
- Receiver-powered if you run one rig, you never want to think about charging, and you're on upgraded electronics.
- Internal battery if you swap between rigs, you're on stock electronics, or you want the freedom to mount the speaker anywhere.
If you're genuinely torn, take the battery. It's the more forgiving choice and it costs $10 to $20 more.
How receiver-powered works
The speaker plugs into a spare channel on your receiver box with a 110 mm cable, the same way a servo or a light kit does. It draws power from your main pack through the receiver's BEC.
What you get: nothing to charge, ever. Turn the rig on, the speaker is on. One less battery in your life, and no dead speaker halfway through a run because you forgot to plug it in the night before.
What it costs you: the speaker is tethered to your receiver box, so mounting options are limited by cable length. And it pulls current from the same BEC that runs your steering servo.
The power draw question, honestly
For our smaller models this is a non-issue. The Single, Micro Single, Micro Double and Double draw very little and stock electronics handle them without noticing.
It becomes a real consideration on The Overkill. Three drivers at full volume is a meaningful load, and stock electronics can struggle to run the speaker hard and the vehicle at the same time. You'll notice it as the audio thinning out under throttle, or in bad cases as steering that feels sluggish when the bass hits.
We say this on the product page rather than hiding it, because a customer who buys the wrong version and has a bad time is worse for us than a customer who buys the right one. If you're running an Overkill on stock electronics, get the battery version. If you've upgraded to a standalone BEC with headroom, receiver power is fine.
How internal battery works
A rechargeable cell lives in the speaker box. USB-C in, 8 hours of playtime out on most models. The Mini runs 10+ hours; the Hardline Bed Overkill runs about 5 because the enclosure is packed with drivers.
What you get: total independence. Nothing wired to your receiver, so no draw on your electronics and no cable dictating where the speaker lives. You can mount it in a bed, a roof rack, a roll cage, or take it out of the truck entirely and set it on a rock while you drive.
The underrated benefit is rig-swapping. If you have three trucks, a battery speaker moves between them in seconds. A receiver-powered one means unplugging and re-routing every time.
What it costs you: another thing to charge, and a bit more size and weight. Across our lineup the battery version runs roughly 6 to 10 mm deeper and 20 to 45 g heavier than the same model receiver-powered.
The weight difference, model by model
| Model | Receiver-powered | Internal battery | Difference |
|---|---|---|---|
| The Double | 65 g | 85 g | +20 g |
| The Super Single | 68 g | 92 g | +24 g |
| The Supreme Single | 85 g | 115 g | +30 g |
| The Quad | 120 g | 165 g | +45 g |
| The Overkill | 120 g | 165 g | +45 g |
On a 1/10 crawler that's not enough to matter much, but if you're already fighting a high centre of gravity it's worth knowing. We wrote more about that in how speaker weight affects crawler handling.
Which models offer which
- Receiver-powered only: The Single, The Micro Single, The Micro Double
- Battery only: The Mini, The Overkill for Hardline Bed
- Your choice: The Double, The Super Single, The Supreme Single, The Quad, The Overkill
Three scenarios
One crawler, stock electronics, runs most weekends. Receiver-powered on anything up to the Supreme Single. Simpler, cheaper, one less charging habit to build.
Three rigs, you rotate. Battery, every time. The convenience of moving one speaker between trucks outweighs the charging.
You want an Overkill. Battery, unless you've upgraded your BEC and know it has headroom.
Still not sure?
Find Your Speaker compares every model and power option side by side on price, weight and box dimensions, so you can see exactly what the choice costs you in size. Every speaker ships free in the US with a lifetime warranty.