M90U-80 vs Vertiv Liebert EXM 208V
The M90U-80 supports up to 80 kW in a single integrated cabinet with modular internal battery configurations. The Liebert EXM 208V supports lower internal battery capacity and typically requires external battery cabinets for higher scalability. The M90U-80 emphasizes integrated modular battery and static-switch architecture for simplified service and higher usable capacity.
What the M90U-80 brings
- Higher usable capacity within a single cabinet.
- Greater N+1 headroom in internal-battery configurations.
- Modular static-switch architecture.
- Integrated maintenance bypass as standard.
- Longer standard warranty coverage.
Feature comparison
| Specification | Xtreme Power M90U-80 | Vertiv Liebert EXM 208V | Advantage |
|---|---|---|---|
| Rated capacity | Up to 80 kW | Up to 40 kW (internal batteries) | Higher in internal-battery config |
| Available power sizes | 15–80 kW | 10–40 kW | Greater scalability |
| N+1 redundancy | Up to 60 kW | Up to 30 kW (internal) | Greater headroom (internal config) |
| Modularity | Power, battery & static-switch modules | Power modules | Modular static switch |
| Maintenance bypass | Integrated, standard | Optional | No added options |
| Cabinet width | 23.6 in | 23.6 in | Equal footprint |
| Warranty | 2-year parts | 1-year parts | Longer coverage |
Scoped to internal-battery configurations, the M90U-80 offers higher capacity (up to 80 vs 40 kW) and N+1 headroom (60 vs 30 kW), a modular static switch, and a standard integrated bypass; the Liebert EXM scales higher with external battery cabinets and larger frames. Cabinet width is equal, and the M90U-80 carries a longer warranty term. Confirm Liebert EXM specifications against current Vertiv documentation.
Choosing between them
Choose the M90U-80 for a self-contained modular online UPS up to 80 kW with integrated runtime and a standard bypass; the Liebert EXM fits lower internal-battery capacities, Vertiv-standardized environments, or deployments that scale capacity through external battery cabinets.
Choose the M90U-80 if you need
- Modular online UPS up to 80 kW
- Integrated runtime
- Standard bypass architecture
The Liebert EXM 208V may fit if you need
- Lower internal-battery capacity
- Vertiv ecosystem alignment
- Higher capacity via external battery cabinets
Related comparisons
Plan your high-density modular UPS deployment
Talk to an Xtreme Power specialist about sizing the right M90U-80 configuration and runtime architecture, planning N+1 redundancy and phased capacity expansion, and comparing modular three-phase platforms for data center, healthcare, industrial, and critical-infrastructure environments.