Endurance 5
5.12kWh LiFePO4 Rack-Mount Battery
Most batteries are designed to fail. This one is designed to be fixed.
The Endurance 5 isn’t built for planned obsolescence. It’s built for systems expected to run for decades, with parts and documentation available when service is needed.
Endurance 5
Built from the ground up for long-term ownership.
We own the BMS source code. We’ve audited it, we improve it, and we’re not dependent on any third-party supplier. The cells are commodity; the intelligence is what determines whether you can still use this thing in 2040.
5.12
kWh Capacity
10 Yr
Warranty
22 Yr
Cycle Life
6000+
Cycles
Built For
Off-Grid & Solar
Homesteads, cabins, and solar installations where the nearest service tech is hours away. LiFePO4 chemistry means no thermal runaway risk, and the standard EIA rack fits your existing equipment room.
Commercial Backup
Data centers, telecom sites, and medical facilities where uptime is non-negotiable. Standard 19" rack mounting integrates with your existing infrastructure. Scale from 5 kWh to 327 kWh as needed.
Critical Infrastructure
Emergency services, communications towers, and agricultural operations that can't wait for parts from overseas. When the grid goes down, your backup power needs to work without calling anyone.
Standard EIA 19″ rack-mount form factor means it fits the same racks as your servers, networking gear, and existing battery systems. No proprietary mounting hardware, special cabinets, or vendor lock-in on infrastructure.
Why We’re Different
You deserve to actually own your equipment.
We own the BMS source code and manufacture boards domestically. That means we can support this product regardless of what happens to global supply chains.
Buy Your Spare BMS Today
Order a spare BMS from any distributor. It ships in an EMP-protected bag. If supply chains collapse, you already have the part.
Universal Compatibility
Standard communication protocols (CAN, RS485) mean it works with the inverter you already have, or the one you choose next.
No Proprietary Lockouts
Your battery works without phoning home. No cloud dependencies, no forced updates, no kill switches.
Imagine it’s 2035.
Your Endurance 5 has been running flawlessly for a decade. Then the BMS shows an error code.
For many batteries, this is the end. The boards are discontinued. Spare parts aren’t available. Time to buy again.
With the Endurance 5, your installer calls the distributor. They ship a replacement BMS, manufactured domestically, from source code we own. Total cost: a fraction of a new battery. Total downtime: one afternoon.
That's sovereignty over your own equipment.
