OUPES B2 Multi-functional Extra Battery

Extend Your Backup Runtime

Add an additional 2,048Wh of battery capacity to compatible OUPES power stations, helping you stay powered longer during outages and emergencies.

Build a Larger Energy System

The B2 allows you to scale your backup power setup over time, making it easy to start with a power station today and expand your capacity as your needs grow.

Perfect for Extended Outages

Whether you're powering a refrigerator, communication devices, medical equipment, or other essential electronics, additional battery capacity means more time before needing a recharge.

Seamless Integration

Designed specifically for compatible OUPES Mega Series power stations, the B2 connects easily and operates as part of a unified energy system.

Long-Term Reliability

Built with EV-grade LiFePO4 battery technology and rated for more than 3,500 charge cycles, the B2 is designed to deliver dependable performance for years to come.

Maintain Portability

Unlike permanently installed systems, the B2 allows you to increase capacity while maintaining the flexibility and portability of your backup power solution.

Battery

• Capacity: 2,048Wh
• Battery Chemistry: LiFePO4 (LFP)
• Lifecycle Rating: 3,500+ Cycles to 80% Capacity
• Battery Management System (BMS): Integrated

Compatibility

• Compatible with OUPES Mega Series Power Stations
• Expansion Battery Only
• Not a Standalone Power Station

Physical Specifications

• Capacity Expansion Module
• Integrated Connection System
• Designed for Stacked Operation with Compatible OUPES Units

Performance

• Adds 2,048Wh of Additional Capacity
• Supports Extended Runtime for Connected Devices
• Enables Larger Whole-Home Backup Configurations

Warranty & Certifications

• Warranty: Up to 6 Years (5-Year Standard Warranty + 1-Year Registration Extension)
• Certifications: UN38.3, MSDS

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.

Free Shipping
Free shipping on all orders within the United States. No hidden fees. No surprise charges.

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