SP-BT 29 . BATTERY TERMINAL
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SUPER POWER AUDIODESIGNED IN ITALY
MMXXVI
4 × 0/4 GA.
Heavy-duty, machined.
The SP-BT 29 is a pair of heavy-duty battery terminals, one positive and one negative, built for high-current car-audio installations. Each terminal clamps onto the battery post and offers two cable inputs for 0 to 4 AWG cable, so you can feed several amplifiers or distribution blocks straight from the battery.
Why this terminal
Each input accepts cable from 0 AWG (53.5 mm²) to 4 AWG (21.2 mm²): four inputs on the pair.
Two hex-socket set screws clamp the strands of each cable: four screws per terminal.
A slotted clamp with one hex-socket clamp bolt locks the terminal on the post: it must not rotate or lift.
Bright silver finish that keeps the installation tidy and easy to check at a glance.
+ and − marked on the top face; the two terminals are mirror images of each other.
Feed amplifiers or distribution blocks straight from the battery, each line with its own fuse.
Safety, installation step by step, wiring, troubleshooting and the full specifications.
⇩ Download the manual (PDF)PDF · English · 2026 edition
What's in the box
SP-BT 29 positive (+) terminal · SP-BT 29 negative (−) terminal · user manual, in a printed retail box "SP-BT 29 · Battery Terminal · 4×0/4GA".
Not included: battery cables, fuse holders, fuses, ring terminals and insulation.
Technical specifications
| TERMINALS | |
|---|---|
| Model | SP-BT 29 |
| Type | Battery terminal set, positive + negative |
| Cable inputs | 4 in total (2 per terminal) |
| Cable range per input | 0 AWG (53.5 mm²) to 4 AWG (21.2 mm²) |
| Cable locking | Hex-socket set screws, 2 per input (4 per terminal) |
| Battery post clamp | Slotted clamp with one hex-socket clamp bolt |
| Polarity marking | + / − on the top face |
| Construction / finish | Machined body, bright silver finish |
| DIMENSIONS (APPROX.) | |
| L × W × H | 85 × 44 × 20 mm |
| Battery post hole | Ø 17 mm |
| Cable inputs (per terminal) | 2 × Ø 14 mm |
| PROTECTION & PACK | |
| Required protection | Inline fuse within 20 cm of the battery on every positive cable |
| Supplied | 1 positive + 1 negative terminal, user manual |
| Packaging | Printed retail box |
| Current rating | Not declared by the manufacturer |
MANUFACTURER'S DATA · DIMENSIONS APPROXIMATE, TOLERANCE ±1 MM · SPECIFICATIONS MAY CHANGE WITHOUT NOTICE
Complete the system
Before you install it
- Disconnect the battery first. Remove the negative (−) cable first, then the positive (+). Reconnect in the opposite order: positive first, negative last.
- Fuse the positive line. An inline fuse holder within 20 cm (8 in) of the battery on every positive cable that leaves the terminal. No fuse, no fire protection.
- Check polarity twice. Each terminal is marked + or −. Never force a terminal onto the wrong post: reversed polarity is not covered by warranty.
- Never smaller than 4 AWG. Size cable and fuse for the total current of your system, following the amplifier data. Never use a cable smaller than 4 AWG in these ports.
- Torque rule of thumb. Tight enough that cables and terminal cannot be moved by hand, never so tight that screw heads or clamp deform. Re-check after the first drive.
Questions installers ask
spaudio@spaudio.it · +39 340 807 8778
Accepted payment methods
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SP Audio — Super Power Audio. Designed in Italy by Audiocar Import & Export SRLS, Milano, official SP Audio distributor for Europe.