Arkpax Ark PRO Expansion Battery

Extend Your Backup Runtime

Add an additional 2304Wh of LiFePO4 battery capacity to your Ark PRO, helping keep essential appliances and devices running longer during power outages.

Build a Scalable Energy System

The Ark PRO supports up to 10 expansion batteries, allowing you to create a backup power solution that grows alongside your home’s energy needs.

Long-Lasting LiFePO4 Battery Technology

Premium lithium iron phosphate battery cells provide thousands of charge cycles for dependable long-term performance.

Perfect for Extended Outages

Additional battery capacity means more time powering refrigerators, freezers, lights, internet equipment, medical devices, and other household essentials.

Seamless Integration

Designed specifically for the Arkpax Ark PRO, the expansion battery connects easily and works as part of one integrated backup power system.

Quiet, Clean Energy Storage

Increase your available power without gasoline, fumes, excessive noise, or ongoing maintenance.

Built for Home Preparedness

Whether you’re planning for storms, extended outages, or greater energy independence, the Ark PRO Expansion Battery helps provide additional confidence when you need it most.

Power. Protection. Peace of Mind.

Expand your backup system today and enjoy the flexibility of a modular energy solution designed for tomorrow.

Battery

• Capacity: 2304Wh
• Battery Chemistry: LiFePO4 (LFP)
• Cycle Life: 3,500+ Cycles to 80% Capacity

Compatibility

• Compatible with Arkpax Ark PRO Portable Power Station
• Supports systems with up to 10 expansion batteries

Important Information

• Expansion battery only
• No standalone AC power output
• Must be connected to an Ark PRO Portable Power Station

Physical Specifications

• Weight: Approximately 51 lbs (23 kg)
• Portable Design
• Integrated Carry Handles

What’s Included

• Arkpax Ark PRO Expansion Battery
• Connection Cable
• User Documentation

You're making an important purchase, and we want you to feel comfortable doing it!

Whether you're preparing for outages, protecting your home, or investing in peace of mind, we're committed to making your experience simple, transparent, and worry-free from start to finish.

Authorized Dealer
We proudly partner with trusted manufacturers and authorized supplier networks to provide genuine products backed by manufacturer warranties and dependable support.

Price Beat Guarantee
Found a lower advertised price from an authorized dealer? We'll do our best to beat it.

30-Day Easy Returns
If your purchase isn't the right fit, we'll help make the return process simple and hassle-free.

Personal Customer Support
Questions before or after your purchase? We're here to help every step of the way.

Satisfaction Guaranteed
We carefully select every product we offer and stand behind the brands we partner with. 

At Prepared Home, we work hard to make the ordering process simple, transparent, and stress-free.

Most in-stock orders are processed and shipped within 1–5 business days. Once your order has shipped, you'll receive a confirmation email with tracking information so you can follow your delivery every step of the way.

Shipping methods and costs may vary depending on the product, manufacturer, size and destination. Any applicable shipping charges or freight requirements will be clearly displayed before you complete your purchase—no hidden fees or surprises.

For larger items that require freight delivery, additional arrangements such as a delivery appointment or signature may be required.

If you have any questions about shipping, delivery timelines or freight requirements before placing your order, our team is happy to help!

Contact us at sales@preparedhomeco.com

Or

Call / Text (845) 327-1866