Omega PA250i Welding System by Sunstone Welders
Sunstone Welders

Omega PA250i Welding System

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$34,900.00
/
Shipping always FREE on orders $100+
Weld Head for your Omega PA250i System:
  • In stock, ready to ship
  • Backordered, shipping soon
  • Manufacturer's warranty
  • Free Domestic Shipping*
  • Ships within 1-2 business days
  • Secure checkout
  • Authorized Retailer

Omega PA250i Welding System

The Case for Copper

One of the biggest challenges when welding EV batteries is finding a welder capable of welding highly conductive metals such as copper and aluminum. Inside a lithium-ion battery are various copper and/or aluminum components that carry the electrical current (such as buss bars). These components are commonly joined to either similar or dissimilar materials to facilitate the electric current. If the joint is not made properly, there is a potential for voltage drops due to the resistance between the two pieces. The Omega PA250i welder is capable of overcoming some of these challenges, thus opening new doors in the world of EV battery welding, specifically by being able to weld copper tabs to battery cans.
COPPER
Tabs
NICKEL
Tabs
The COPPER
Difference

Boost Efficiency

With copper tabs, power cell efficiency significantly improves. And when the customer experience is all about battery performance, copper is king!
Conductivity
1.18 x 107σ
5.96 x 10 7σ
5x
More
Resistivity
1.68 x 10-8ρ
8.50 x 10-8ρ
80%
Less

Save Money

Copper tabs will connect your power cells more efficiently and do it for more than half the price compared to some nickel.


 Price
as of OCT 2020 		USD $3.09/lbs
 USD $7.16/lbs
 57%
Savings

Weld Confidently

With copper, attach a thicker tab for a larger spot size and improved peel strength. Plus, the heat affected zone is small, quick and wont damage the power cells internal components.


 Nugget Area 5.06mm2
 0.29mm2
 17x
Larger
Nugget Diameter 2.54mm
 0.61mm
 4x
Larger
Peel Strength 10kg/22lbs
 6kg/13lbs
 66%
Stronger
Thickness 0.010 - 0.020"
 0.005 - 0.010"
 2x
Thicker



Sunstones Omega PA250i Copper Battery Tab Welder Provides:

Feature

Benefit
Dissimilar Welding Capabilities Copper to steel, copper to aluminum, nickel to steel-ideal for battery welding!
3 Available Configurations 1) Stylus only
2) Weld head
3) CNC table
250 Ws Max Energy The most powerful Sunstone pulse arc micro welder yet!
Weld materials 0.003-.030" (0.075-0.75mm) in thickness Perfect for attaching copper tabs to power cells
Digital Control Adjust and control all energy attributes with color touch screen
Visual Waveform Graphs View energy waveforms and histograms
PLC-Ready With 5 outputs/2 inputs easily integrates into your production process
CNC Compatibility Attaches to any CNC table, like the Janome Cartesian Robot, for maximum production levels
127 Remote Schedules Saves time with access to saved welds
Import/Export Saved Welds Easily transfer settings to other units
Lock-Out Mode Prevent changes to production settings
Alarms and Warnings Avoid time-consuming errors or potentially hazardous conditions
Built-in Training How-to videos always at your fingertips
WiFi Software Upgrades On-board software is easily maintained



 

Overview and Applications

The Omega PA250i Copper Tab Battery Welder is capable of welding highly conductive metals such as copper and aluminum. It also comes in a CNC version that is capable of performing all the same tasks with the assistance of a CNC table.

This system brags an all new design and performance. This latest update takes all of the great features from our previous model and adds to it a new motorized weld head adding greater control, precision, and uniformity to every weld. Manufacturers can produce lighter, more compact battery packs without compromising power or capacity.

Features and Benefits of the Sunstone Omega PA250i Copper Battery Tab Welder:

  • Solderless Connections – The metals are fused together at the weld spot for a continuous connection and no voltage drops.
  • Clean Weld Spots – During the welding process, surface contaminants are burned off, allowing for strong, clean welds.
  • Weld Dissimilar Metals – Sunstone Spot Welders can weld any combination of metals, such as Copper to Aluminum.
  • Small Heat Affected Zone – The heat-affected zone (HAZ) is very small and very localized to ensure no degradation to the battery. The 250i provides enough energy to make the weld without affecting the integrity of the cell.


More About the Omega PA250i Copper Tab Battery Welder System

The Omega PA250i is the perfect copper battery tab welder. The Omega PA250i has a new design to give superior performance. This newest update takes all of the great features from our previous EV copper tab battery welder, and adds to it a new motorized weld head for greater control, precision, and uniformity to every weld. The power supply has also been upgraded to offer superior control and fine-tunabilty to guarantee the perfect weld can be achieved. Manufacturers can produce lighter, more compact, and more efficient battery packs without compromising power or capacity.


The Omega PA250i in Action

Customer Spotlight on Vantage Power


The Omega PA250i CNC Version

Sunstones Omega PA250i copper battery tab welder also comes in a CNC version that is capable of performing all the same tasks with the assistance of a CNC table. Watch the below video to see it in action.

Shipping Policy

Effective Date: 11/18/2025

1. Introduction

At Hobby Tech Supply, we aim to provide a seamless and transparent shipping experience for our customers. This Shipping Policy outlines the terms and conditions related to the delivery of products purchased from our website, hobbytechsupply.com.

2. Shipping Destinations

  • Countries We Ship To:

    • United States

  • Future Expansion:

    • We are continually working to expand our shipping destinations. Please check back for updates.

3. Shipping Costs

  • Domestic Shipping (United States):

    • Standard Shipping: FREE standard shipping for all orders over $100

      • The free shipping threshold applies to the subtotal after discounts and before taxes.

    • Expedited Shipping: Calculated based on item weight and priority selection (FedEx)

    • Flat Rate Shipping: $5 flat rate for orders under $100.

  • International Shipping:

    • Coming Soon!

  • No Hidden Fees:

    • All shipping costs and sales taxes are calculated and displayed at checkout. There are no hidden fees.

4. Order Processing Time

  • Processing Time:

    • Orders are processed within 1-2 business days (Monday to Friday, excluding holidays). Note: Processing time does not include weekends or carrier transit time.

  • Order Cut-Off Time:

    • Orders placed before 12:00 PM EST start processing the same day. Please note that shipping timelines depend on each vendor’s schedule, so same-day shipping cannot be guaranteed.

  • Weekend and Holiday Orders:

    • Orders placed on weekends or public holidays will be processed on the next business day.

  • Note: If your order contains items from multiple vendors, they may ship separately, and each shipment will have its own tracking number.

5. Estimated Delivery Time

  • Domestic Shipping:

    • Standard Shipping: 3-5 business days

    • Expedited Shipping: 1-2 business days

  • International Shipping:

    • Coming Soon!

  • Note: Delivery timeframes are estimates. Actual processing and transit times vary by vendor and carrier and cannot be guaranteed. We are not responsible for supplier delays or carrier issues caused by factors outside our control, including vendor shipment issues or weather-related carrier disruptions.

6. Shipping Methods and Carriers

  • Reliable Carriers:

    • Domestic Carriers: USPS, FedEx, UPS

    • We partner with reputable carriers to ensure your package arrives on time and safely.

  • Shipment Tracking:

    • All orders include tracking information, which will be provided via email once your order has shipped.

    • Orders fulfilled by multiple vendors may arrive in separate packages. Each will include its own tracking number.

  • Insurance:

    • Most shipments include limited carrier insurance. Additional coverage may be provided by certain vendors. If your order arrives damaged or missing items, please contact us so we can assist with a resolution.

7. Order Tracking

  • Tracking Information:

    • After your order has been shipped, you will receive an email containing:

      • Tracking Number

      • Carrier Name

      • Link to Track Your Package

  • How to Track Your Order:

    • Visit hobbytechsupply.com/track-order or the carrier's website.

    • Enter your tracking number to view the status and estimated delivery date.

    • If your order is split into multiple shipments, you will receive separate tracking emails for each package.

  • Assistance:

    • If you have questions or need assistance with tracking, please contact our Support team at support@hobbytechsupply.com.

8. Delivery Issues

8.1 Delayed or Lost Packages

  • Delayed Delivery:

    • If your package is delayed beyond the estimated delivery time, please contact us at support@hobbytechsupply.com or (412) 520-1022.

  • Lost Packages:

    • If your tracking information indicates that your package was delivered but you have not received it, please complete the following steps:

      • Verify the shipping address provided.

      • Check with neighbors or building management.

      • Contact us for further assistance.

        • We may also ask you to file a missing package claim with the carrier so we can proceed with a replacement or resolution.

8.2 Damaged Packages

  • Reporting Shipment Damage:

    • If your package arrives damaged:  

      • Contact us within 7 days at support@hobbytechsupply.com.

      • Note: Returns will NOT be authorized if damage is caused by customer misuse or improper setup.

    • Take photos of the damaged packaging and items.

  • Resolution:

    • We will work with you to arrange a replacement or refund as appropriate.

9. Missing or Incomplete Items

  • Reporting Missing Items:

    • If any items are missing from your order:

      • Contact us within 7 days of receiving your package.

      • Provide your order number and details of the missing item(s).

      • Note: refunds will NOT be authorized if missing items are reported late. 

  • Resolution:

    • We will investigate and resolve the issue promptly by sending the missing item(s) or offering a refund.

10. Return and Refund Policy

  • Returns:

    • Damaged or Missing Items:

      • These must be reported within 7 days of receiving your package so we can file the appropriate claims with the carrier or supplier.

    • General Returns (not related to damage or missing items):

      • You may request a return within 30 days of receiving your order.

    • After approval, you will receive return shipment instructions.

  • Conditions for General Returns:

    • Items must be unused, undamaged, with all components present, and in their original packaging.

    • Certain items (e.g., personalized goods, gift cards) may not be eligible for return.

  • Return Shipping Costs:

    • Customer Responsibility: Return shipping costs are the customer's responsibility unless the item is defective or not as described.

      • Restocking fees vary by manufacturer and will be clearly communicated before a return is approved. 

    • Company Responsibility: If the return is due to our error, we will cover the return shipping costs and associated fees.

  • Refunds:

    • Refunds are processed within 14 days after receiving the returned item.

    • Refunds will be issued to the original payment method.

  • For More Information:

    • Please refer to our Return and Refund Policy for detailed information. 

11. Incorrect Address

  • Address Accuracy:

    • Please ensure that all shipping information is correct. We are not responsible for orders shipped to incorrect addresses provided by the customer.

    • Once an order is placed, if an error is identified, contact us immediately. If the item has not yet shipped, we may be able to update your address as requested.

  • Returned Packages:

    • If a package is returned to us due to an incorrect address:

      • We will contact you to arrange reshipment.

      • Additional shipping charges may apply.

12. International Customs and Duties

  • Coming Soon!

13. Contact Information

If you have any questions or concerns regarding your shipment, please contact us:

  • Customer Service Email: support@hobbytechsupply.com

  • Customer Service Phone: 412-520-1022

Our customer service team is available Monday to Friday, 8 AM to 4 PM EST.

14. Changes to This Shipping Policy

We reserve the right to modify this Shipping Policy at any time. Changes and clarifications will take effect immediately upon posting on the website. We encourage you to review this policy periodically.

Thank you for shopping with Hobby Tech Supply!

We appreciate your business and are committed to providing you with exceptional service.

Limited Warranty 

Standard Warranty
Most products come with a 1-year limited warranty from the date they ship. This covers defects in materials and workmanship under normal use.

Extended 3-Year Warranty (Welders Only)
The following welder models include a 3-year warranty:
Zapp, Zapp Plus, mPulse, mPulse30, Orion PJ, Orion 100c, Orion 150s, Orion 250s, and Orion 200i.

What’s Not Covered

Except for the limited warranties listed above, no other warranties are provided. This means:

  • No warranty of fitness for a specific purpose
  • No guarantee of performance or compatibility
  • No guarantee against intellectual property infringement

This applies to both products and any included software.

Third-Party Products

Some items may include components or software made by other manufacturers. These third-party products:

  • Are not covered by this warranty
  • May have their own warranty from the original manufacturer
  • Can be supported by us within reason—we’ll help you contact the manufacturer, but any costs are your responsibility

How to Make a Warranty Claim

To qualify for warranty service, you must:

  1. Notify us in writing within 5 days of discovering a defect.
  2. Allow us to inspect the product.
  3. Return the product to us (if requested) with a valid RMA number. Items must be prepaid, insured, and shipped to the address we provide.
  4. The issue must be verified as a defect that occurred under normal, proper use.

When the Warranty Does Not Apply

The warranty is void if:

  • You continue using the product after discovering a problem
  • The issue is caused by incorrect installation, improper use, poor maintenance, or ignoring instructions
  • The product is altered or repaired without our written approval
  • Anyone other than our technicians or authorized partners performs repairs without our permission

Consumable items (like electrodes or gas tanks) are only covered for defects visible upon delivery. Once used, they are no longer covered.

What We Will Do

If a covered defect is confirmed during the warranty period, we will choose one of the following options:

  • Repair the product

  • Replace the product or defective part
  • Refund or credit you based on the original purchase price

If we request the product be returned, shipping costs are the buyer’s responsibility.

Your Exclusive Remedy

These repair, replacement, or refund options are the only remedies available under this warranty. No other promises or representations—verbal or written—are valid unless included in this warranty.

If we request the product be returned, shipping costs are the buyer’s responsibility.

Optional Extended Warranty

Customers have the option to extend the warranty for any Pulse Arc, Laser or Resistance Welder to a Forever Warranty using a paid subscription service. The warranty will be valid as long as the subscription remains active and includes: 

  • Complimentary Loaner for Repairs
  • Free Replacement at supplier's discretion
  • Free Software Upgrades
  • Complimentary shipping for any repairs
  • Expedited Customer Service
  • And More!! 

Sign up here: Sunstone Circle Forever Warranty 

OMEGA PA250I USER MANUAL

ORION PA250I DATA SHEET

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