This is a 4AWG, 3.5-foot power cable with a BB350 connector on one end and a bare copper end on the other, built to connect your BigBattery BB350-equipped battery to the rest of your power system in a custom configuration.
BB350 cable assemblies are built for direct connection into BigBattery power systems, giving you a fixed, factory-defined connector on one end and an open bare-end termination on the other for custom wiring into busbars, breakers, or distribution hardware. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
- 4 AWG copper conductor
- 3.5 ft (42 in) overall length
- BB350 connector on one end for direct battery/system connection
- Bare copper end on the opposite end for custom termination
- Compatible with BigBattery batteries and systems using the BB350 connector interface
- NOT compatible with battery or inverter connectors that are not BB350 type unless you re-terminate the bare end appropriately [NEEDS VERIFICATION]
- No voltage rating specified by manufacturer data — do not assume a rating without confirmation [NEEDS VERIFICATION]
The bare end on this cable means you decide the termination — and that's exactly where mistakes happen. A poorly crimped or undersized lug on a 4 AWG conductor creates resistance at the joint, and resistance under load means heat. Over repeated charge/discharge cycles, that heat degrades the crimp and can lead to a loose connection, voltage drop, or worse, a hot spot that starts thermal runaway at the terminal. Terminate the bare end with a properly sized copper lug rated for 4 AWG, using a hydraulic wire crimper rather than a bolt-cutter-style crimper — the die needs to match the lug barrel size for a gas-tight connection. Torque any lug-to-busbar or lug-to-breaker connection to the hardware manufacturer's spec using a digital torque wrench, and check that spec against NEC ampacity tables for 4 AWG copper conductor before you finalize the run.
Key Benefits:
- Solid copper conductor construction for consistent conductivity across the cable run
- Factory BB350 connector eliminates guesswork on the battery-side connection
- Bare end gives you flexibility to terminate into busbars, breakers, or distribution blocks of your choice
- 4 AWG gauge sized for BigBattery BB350 system applications
- Fixed 3.5 ft length simplifies enclosure and rack planning for BB350-based setups
| Spec | Value | Unit |
|---|---|---|
| Wire Gauge | 4 | AWG |
| Length | 3.5 | ft |
| Connector Type (End A) | BB350 | — |
| Termination Type (End B) | Bare end | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
- Fits: BigBattery batteries and power systems equipped with a BB350 connector interface
- Fits: Custom power system builds requiring a bare-end termination into busbars, breakers, or distribution hardware
- Does NOT fit: Battery or inverter systems using Anderson SB175, MC4, or other non-BB350 connector types without re-terminating the bare end [NEEDS VERIFICATION]
- Does NOT include: any voltage rating certification — confirm system voltage compatibility before installation [NEEDS VERIFICATION]
| Compliance Item | Value |
|---|---|
| UL Listing | [NEEDS VERIFICATION] |
| NEC Ampacity Reference | [NEEDS VERIFICATION] |
| IP Rating | [NEEDS VERIFICATION] |
FAQ
What size are the terminal lugs?
This cable does not use ring or lug terminals. One end has a BB350 connector, and the other end is a bare copper end that you terminate yourself to fit your busbar, breaker, or lug of choice.
Is this cable rated for 48V systems?
The manufacturer data provided does not specify a voltage rating for this cable. Confirm voltage compatibility with your BigBattery system documentation before wiring. [NEEDS VERIFICATION]
Will this cable work with non-BigBattery batteries?
The BB350 connector end is built for BigBattery's BB350 interface. It is not designed for batteries using different connector standards unless you terminate the bare end to match that hardware.
What gauge and length is this cable?
It is 4 AWG copper cable, 3.5 feet long, with a BB350 connector on one end and a bare end on the other.
Warranty & Registration: Manufacturer warranty terms for this cable are not included in the provided data. Refer to the "Resources (System Manuals and Warranty)" Tab above on this page for full warranty documentation, or contact us before you order if you need confirmation — we always reply back.
