This is a connector accessory, not a battery. If you are building your own 1/0 AWG power cable to run between your ETHOS control box and inverter, this kit gives you the plug hardware you need on the battery side of that cable.
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.
What This Part Is
BigBattery makes this connector set for owners who are terminating their own 1/0 AWG cable between an ETHOS control box and an inverter. It is a hardware component, not an assembled cable and not a battery. If you're comparing chemistries, voltages, or capacities for a full battery system, this listing does not carry those specs — this is purely the plug-end hardware for a cable you build yourself.
Battery Characteristics
Not applicable. This product contains no cells, no BMS, and no chemistry — it is a pair of Energy Storage Plug connectors (one negative, one positive) used to terminate a 1/0 AWG cable at the control-box-to-inverter connection point.
Wiring & Configuration Limits
This kit is sized for 1/0 AWG cable. It is intended for one control-box-to-inverter cable run per set (one positive plug, one negative plug). It is not a series or parallel expansion component — it does not connect batteries to each other, and it does not change any series/parallel wiring limits on your ETHOS system. Confirm your inverter's terminal/lug compatibility before crimping, since these are supplied as loose connectors, not a pre-terminated cable.
Pro-Installer Tip
Undersized crimps or a loose lug at the control-box-to-inverter junction is a common source of voltage drop and heat buildup under load — the kind of friction that goes unnoticed until the system is pulled hard. A poorly seated 1/0 AWG connection can run hot enough to degrade the insulation and eventually cause an intermittent connection, which on a lithium system can trigger nuisance BMS faults or lockouts that look like a battery problem but aren't. Use a rated hydraulic crimper sized for 1/0 AWG lugs, and torque the terminal hardware to the inverter manufacturer's spec. After installation, check the connection with an infrared thermometer or clamp meter under a real load cycle — a properly crimped and torqued 1/0 AWG connection should show no meaningful temperature rise relative to the surrounding cable, regardless of whether your battery bank is run at 50% or 100% DoD.
Key Benefits
- Lets you terminate your own 1/0 AWG control-box-to-inverter cable rather than buying a pre-made assembly
- Matched positive and negative Energy Storage Plug connectors sold as a set
- Designed for compatibility with ETHOS control box hardware
Technical Table
| Spec | Value |
|---|---|
| Product Type | Connector accessory (control box to inverter) |
| Contents | 1 x Energy Storage Plug (Negative), 1 x Energy Storage Plug (Positive) |
| Cable Gauge Compatibility | 1/0 AWG |
| SKU | CNT084 |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
Compatible with: ETHOS control box to inverter 1/0 AWG cable builds.
NOT included: the 1/0 AWG cable itself, crimping tools, or an inverter. NOT a pre-assembled cable — you (or your installer) must crimp these onto your own cable. NOT a battery, and NOT a BMS component. NOT intended as a series or parallel bank interconnect.
FAQ
Does this include the 1/0 AWG cable?
No. This listing is the connector plugs only (one positive, one negative). You supply and cut the 1/0 AWG cable.
Is this a battery or does it contain a BMS?
No. This is a connector hardware accessory with no cells and no Battery Management System.
What gauge cable is this connector rated for?
1/0 AWG, per the manufacturer listing.
Can I use this to connect two batteries in series or parallel?
No. This connector set is for the control-box-to-inverter cable run, not for battery-to-battery series or parallel interconnects.
Warranty & Support
BigBattery's USA-based team provides support from purchase through installation. If you have questions about whether this connector matches your control box or inverter setup, ask us before you order. We always reply back.
