Copper Busbar Connectors

Copper Busbar Connectors for Battery & Energy Storage Systems — High-Purity T2 Copper, Custom Hole Patterns

Avantar's Copper Busbar Connectors are carefully made from T2 high-purity copper (≥99.9% purity) to connect battery cells and modules in energy storage, UPS, and EV battery systems in series and parallel. They come in thicknesses ranging from 1 mm to 6 mm and widths ranging from 10 mm to 120 mm. They have mounting holes M5 to M12 and offer low-resistance, high-current lines. Tin or nickel plating protects against rust for a long time. The products meet the requirements of ISO 9001, CE, and RoHS. With a lead time of 7–15 working days and a minimum order of 100 pieces per model, OEM/ODM customisation is possible.

What Are Copper Busbar Connectors?

Power distribution units, battery cells, and modules are all linked by these solid, conductive parts. They move strong, steady currents between places of connection with very little resistance and heat.

Most of the time, they are used in energy storage cabinets (ESS), UPS battery racks, battery packs for electric vehicles (EVs), and general power distribution assemblies. Pre-punched bolt holes make installation quick and safe without the need for soldering.

Key Features & Construction

Avantar busbar connectors are made from T2 copper, which has at least 99.9% copper by weight. This has less resistance and better heat transfer than most copper alloys.

You can get either a tin-plated or a nickel-plated finish on each connection. For normal ESS and UPS situations, tin plating works well. Nickel plating, on the other hand, works best for high temperature or high oxidation battery cabinet installations.

Already-punched holes allow for straight assembly with M5 to M12 bolts. You can choose between stiff and flexible construction, depending on your layout needs.

Applications

These connectors are designed for new energy and power distribution environments, including:

• Energy Storage Systems (ESS): Series-parallel connection of battery modules in grid-scale and commercial storage cabinets
• UPS Battery Systems: Reliable inter-cell and inter-module connections for uninterruptible power supplies
• EV Battery Packs: Module-to-module links in electric vehicle battery assemblies
• Power Distribution Boards: Low-loss jumper connections between busbars and terminal blocks
• Industrial Power Infrastructure: General high-current distribution in switchgear and panel boards

Technical Specifications

Current-carrying capacity scales with the cross-sectional area of the connector. Your engineering team can calculate the required dimensions based on target ampacity and allowable temperature rise.

Custom Design Options

Standard catalog sizes cover a wide range of applications, but many ESS and EV battery projects require connector geometry matched to a specific module layout. Avantar supports full OEM/ODM customization on:

• Thickness from 1 mm to 6 mm
• Width from 10 mm to 120 mm
• Hole spacing, hole count, and bolt size (M5–M12 or non-standard patterns)
• Connector shape — straight, L-shaped, U-shaped, or project-specific profiles
• Surface plating — tin or nickel based on your operating environment
• Rigid or flexible construction based on mechanical constraints

Submit your drawings, module layout diagrams, or technical specifications, and our team will provide design confirmation and arrange sample production before bulk order.

How to Specify?

When requesting a quote, confirm the following five parameters to avoid mismatches:

1. Thickness — specify in mm (range: 1–6 mm)
2. Width — specify in mm (range: 10–120 mm)
3. Hole specification — bolt size (M5–M12) and hole spacing or pattern
4. Surface plating — tin-plated (general use) or nickel-plated (high-oxidation environments)
5. Construction style — rigid or flexible

For current-carrying requirements, provide your target continuous current and ambient temperature. If you have a battery module layout drawing, send it directly — our team can recommend optimal dimensions and check compatibility before production starts.

Quality & Certifications

Avantar manufactures Copper Busbar Connectors in compliance with internationally recognized standards, including ISO 9001, CE, and RoHS.

Each export shipment includes:

• Certificate of Origin
• Material test reports (T2 copper grade confirmation)
• Plating thickness and dimensional inspection records
• RoHS compliance documentation

For large ESS or UPS tender projects, you can request finished-goods video inspection or arrange third-party witness inspection before shipment.

FAQ

Q: What are the goods, and how are they used?

A: The products are T2 high-purity copper conductive parts that are used to connect battery cells and modules in series and parallel. They come in hard or flexible forms and have surfaces that are plated with tin or nickel. ESS cabinets, UPS battery systems, EV battery module connections, and general power-distribution units are all common uses.

Q: Do you make things or do you trade?

A: Avantar is a direct manufacturer. Our Guangdong plant cuts, punches, bends, and tin/nickel plates T2 copper all by itself. When you buy directly from the maker, you skip the middleman markup and can make changes to your ESS, UPS, and EV battery projects more quickly.

Q: When I order special battery connection strips, what details should I make sure of?

A: Make sure of five things: the thickness of the copper strip (1–6 mm), its width (10–120 mm), its surface plating (tin or nickel), its mounting hole specification (M5–M12 or custom), and whether it is rigid or flexible. Give us your target continuous current rating and the layout of the battery modules so that we can help you choose the best sizes.

Q: What kinds of licenses and test records are out there?

A: The products are made in line with ISO 9001 and meet CE and RoHS standards for markets in Europe and around the world. There is an origin certificate, a material test report, a plating and dimension inspection record, and a RoHS certificate in every shipment. Third-party witness inspections can also be set up for large-scale ESS or UPS bids.

Q: How much do you need to order, how long does it take, and how do you package it?

A: As a general rule, the MOQ for each model is 100 pieces. After the order is confirmed, it takes 7–15 working days to make standard designs. Export boxes or wooden cases with anti-oxidation coatings are used to protect goods from surface oxidation and damage during transport. It is possible to send goods by sea or air.

Q: Can I try some samples first before I buy a lot?

A: Yes. Before committing to bulk production, you can order samples to see how they work. This is especially helpful for ESS, UPS, or EV battery applications where exact measurements are needed. Email us at [email protected] to talk about the samples you need.

Get a Quote

Have a project requirement or a custom drawing ready with Copper Busbar Connectors? Reach us at [email protected].