Bridge window clarity
10-minute backup gives teams a defined window for generator start, transfer, and safe operational response.
Data center UPS bridge power
10-Minute UPS Battery Rack for 250kW and 300kW Data Centers
A compact high-rate LFP battery rack for data center transfer windows, generator synchronization, and controlled shutdown. Designed around 512V architecture, 10-minute 6C discharge, and a single-rack footprint for AI, colocation, edge, and enterprise UPS rooms.
235-250kWSingle-rack output options
10 min / 6CBridge power discharge profile
512VUPS battery system voltage
43.5-51.2kWhSystem energy range
600 x 1000Compact rack footprint
Built for the way US data center teams evaluate critical power
The page has been rebuilt around the information a data center facilities, electrical, or procurement team needs first: output, runtime, voltage, footprint, compatibility, risk controls, and next-step engineering review.
High-rate LFP
6C discharge supports UPS bridging applications where short-duration power density matters more than long-duration storage.
Floor-space discipline
A single 600 x 1000 x 2000 mm rack reduces room planning complexity compared with distributed battery strings.
UPS ecosystem fit
Positioned for common UPS environments including Vertiv, Eaton, Delta, APC, and project-specific integration review.
Technical specifications
The two rack configurations keep the same 512V UPS voltage and 10-minute discharge profile, with different capacity and output options for 250K/300K backup planning.
| Parameter | Model 235K (85Ah) | Model 250K (100Ah) |
|---|---|---|
| Power output | 235 kW | 250 kW |
| Backup time / rate | 10 min / 6C | 10 min / 6C |
| System voltage | 512 V | 512 V |
| System capacity | 85 Ah | 100 Ah |
| Battery module | 51.2V85 | 51.2V100 |
| System energy | 43.5 kWh | 51.2 kWh |
| Rack dimensions | 600 x 1000 x 2000 mm | |
| UPS compatibility | Project review for Vertiv, Eaton, Delta, APC, and other UPS platforms | |
Final selection should be validated against UPS DC bus requirements, breaker/protection design, thermal limits, battery monitoring, seismic needs, and local code requirements.
Architecture for controlled shutdown and transfer windows
For US data center teams, the strongest message is operational confidence. The rack should help facilities teams answer whether the battery can bridge the transfer window, fit the room, communicate with the UPS, and simplify maintenance planning.
Application fit
The redesigned page presents the rack as a mission-critical component, not a generic battery product.
AI and GPU clusters
Short-duration, high-power UPS support for dense compute loads where transfer timing is critical.
Colocation facilities
Rack-level backup planning for facilities balancing footprint, uptime commitments, and serviceability.
Edge and enterprise UPS
Compact backup for distributed rooms that need predictable runtime without a large battery footprint.
Related data center power pages
5 Min Single Rack UPS Battery 600KCompare the higher-power short bridge-time UPS battery option.15-Minute 100K/200K UPS Battery RackReview the longer-runtime LFP rack configuration for UPS backup.Telecom and Data Center LFP BackupExplore the broader critical power battery solution family.Containerized UPS Battery SystemReview containerized backup for larger data center deployments.
FAQ
What does 10-minute UPS backup mean?
It means the rack is positioned for short-duration bridge power, typically covering transfer, generator start, or controlled shutdown timing.
Is this a full energy storage system?
No. It is a high-rate UPS battery rack. Final system behavior depends on the UPS, protection design, controls, and site integration.
Why use LFP for UPS rooms?
LFP chemistry supports compact, high-rate backup with strong thermal stability compared with legacy battery approaches.
Plan a 10-minute UPS battery rack review
Send your UPS brand, required load, runtime target, room constraints, and project location. FNS Power can help confirm the right rack configuration for your data center backup design.