This is a parallel box from BigBattery, used to tie multiple batteries together into one bank. If you're expanding a battery system and need a central connection point instead of daisy-chaining cables between units, this is the part you're looking at.
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.
A parallel box sits at the center of a multi-battery bank, and every connection running through it carries the combined current of your system. That makes solid terminal contact and correct wire sizing non-negotiable — a loose connection here doesn't just cause a fault, it can create a hot spot across your entire bank. We don't have the full gauge, ampacity, and terminal specifications from BigBattery listed for this page yet, so treat the fields below as a starting point and confirm exact ratings before you wire it in.
- Part type: Parallel Box (battery interconnect accessory)
- SKU / Model: CNT016
- Wire gauge, ampacity limit, voltage rating, and terminal size: [NEEDS VERIFICATION] — not provided in manufacturer data
- Compatible battery models/systems: [NEEDS VERIFICATION] — confirm against your specific battery model before ordering
- NOT confirmed for use outside the ampacity and voltage limits of your battery bank until ratings are verified — do not assume this part matches your system without checking
Parallel connections are where voltage imbalances between batteries show up first — a loose lug at the parallel box will let one battery in the bank take more of the load than the others. Over time that uneven draw stresses the weaker cell group and can trigger a low-voltage or imbalance fault on your inverter. Before energizing the bank, torque every terminal connection at the parallel box to the manufacturer's spec using a digital torque wrench, and verify equal resting voltage across all batteries with a multimeter. This matches standard practice under NEC guidance for securing current-carrying conductors — a torqued, verified connection is the difference between a stable bank and a nuisance fault six months from now.
- Centralized connection point for multi-battery parallel banks
- Reduces the need for daisy-chained cable runs between individual batteries
- Simplifies future bank expansion by giving you one point of access
- Housing and hardware details (material, IP rating): [NEEDS VERIFICATION]
| Spec | Value | Unit |
|---|---|---|
| SKU / Model | CNT016 | — |
| Part Type | Parallel Box | — |
| Price | 360.00 | USD |
| Wire Gauge | [NEEDS VERIFICATION] | AWG |
| Ampacity Limit | [NEEDS VERIFICATION] | A |
| Voltage Rating | [NEEDS VERIFICATION] | V |
| Terminal Size | [NEEDS VERIFICATION] | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
- Positive fitment: Designed as a BigBattery accessory for parallel bank wiring. Exact compatible battery/inverter models: [NEEDS VERIFICATION].
- Negative fitment: NOT confirmed for use with any battery system outside verified ratings. Do not assume compatibility with non-BigBattery batteries or systems exceeding unverified voltage/ampacity limits without confirming first.
- NOT rated to exceed unverified ampacity or voltage limits — ask us before you order if your system's specs aren't listed here.
| Compliance Item | Detail |
|---|---|
| UL Listing | [NEEDS VERIFICATION] |
| NEC Ampacity Reference | [NEEDS VERIFICATION] |
| IP Rating | [NEEDS VERIFICATION] |
FAQ
What size are the terminal lugs on this parallel box?
Terminal lug size is not specified in the manufacturer data provided for this listing. [NEEDS VERIFICATION]
Is this parallel box rated for 48V systems?
Voltage rating is not specified in the manufacturer data provided for this listing. [NEEDS VERIFICATION]
Will this parallel box work with any battery brand?
Compatible and incompatible battery models are not specified in the manufacturer data provided for this listing. [NEEDS VERIFICATION] Check the Resources tab or ask us before you order.
What is the maximum ampacity this parallel box can handle?
Ampacity limit is not specified in the manufacturer data provided for this listing. [NEEDS VERIFICATION]
Warranty & Registration
Manufacturer warranty terms for this item are not included in the data provided. Please refer to the "Resources (System Manuals and Warranty)" Tab above on this page for the manufacturer's warranty documentation, or ask us before you order and we'll get back to you.
