This is a connector kit, not a battery. It's for anyone building their own 2 AWG battery-to-battery power cables for an ETHOS system and needs the correct plug ends to terminate them.
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.
Why This Matters
Cable terminations are a common point of failure in DIY battery banks. Loose or mismatched connectors cause voltage drop, heat buildup, and intermittent connections that are hard to diagnose later. This kit gives you the matched positive and negative energy storage plugs designed for 2 AWG cable runs between batteries, so your homemade cables terminate the same way as a factory-made ETHOS cable would.
Product Characteristics
This is a connector accessory, not a battery, so there is no chemistry, voltage, or capacity rating associated with this item. It ships as a set of two plugs: one positive Energy Storage Plug and one negative Energy Storage Plug, sized for 2 AWG cable.
Wiring & Configuration Notes
These connectors are intended for building battery-to-battery power cables — the cables that carry your main current path between units in series or parallel configurations. They are not signal or communication connectors and are not rated for data/CAN bus wiring. Confirm your cable's gauge (2 AWG) and crimp/termination method are compatible with the plug barrel size before assembly.
Pro-Installer Tip
Loose crimps at the connector barrel are the leading cause of hot spots in DIY battery cable runs — a poor crimp on 2 AWG cable increases resistance at exactly the point where current is highest. Left unaddressed, that resistance generates heat under load, degrades the crimp further, and can lead to intermittent voltage drop or connector failure over repeated cycles. Use a proper hydraulic or ratcheting crimp tool rated for 2 AWG lugs, and verify the finished connection with a low-resistance ohmmeter or a clamp meter under load before putting the bank into service. Treat this the same way you'd treat any main current-carrying connection in a battery bank operating near its rated continuous discharge — a bad crimp here undermines the safety margin of the whole system, regardless of the battery chemistry or depth-of-discharge design behind it.
Key Benefits
- Matched positive and negative plug set for 2 AWG battery-to-battery cable builds
- Compatible termination style for ETHOS battery-to-battery connections
- Lets you build custom cable lengths instead of relying on fixed factory cables
Technical Table
| Spec | Value |
|---|---|
| SKU | CNT082 |
| Cable Gauge Compatibility | 2 AWG |
| Contents | 1x Energy Storage Plug (Positive), 1x Energy Storage Plug (Negative) |
| Product Type | Accessory / Connector Kit |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
This connector set is designed for use with 2 AWG battery-to-battery power cables on ETHOS systems. It is NOT a communication or data cable connector. It does NOT include the cable itself — only the plug ends. It is NOT rated for wire gauges other than 2 AWG unless you confirm compatibility separately, and it is NOT a substitute for a factory pre-made ETHOS power cable if you are not comfortable performing your own crimping and assembly.
FAQ
Q: What's included in this kit?
A: One positive Energy Storage Plug and one negative Energy Storage Plug, for a total of two connectors.
Q: What cable gauge is this for?
A: 2 AWG battery-to-battery power cable.
Q: Does this include the cable itself?
A: No. This kit contains the connector plugs only. You supply and terminate your own 2 AWG cable.
Q: Can I use this for communication or data cabling?
A: No. These are power connectors for battery-to-battery current-carrying cables, not signal or data connectors.
Warranty & Support
BigBattery's USA-based team is available for questions from purchase through installation. Reach out if you're unsure whether these connectors match your cable gauge or crimp tooling before you order — we always reply back.
