LiFePO₄ Battery Technology · Product Index

Lithium UPS Systems

All Xtreme Power lithium UPS systems use LiFePO₄ (lithium iron phosphate) battery chemistry — 350VA to 30kW, single-phase and three-phase. Find the right platform below by form factor.

15 yr
Battery service life
ideal conditions
5,000
Discharge cycles
3,000–5,000 rated
50°C
Operating temperature
all lithium platforms
350VA
Smallest model
to 30kW three-phase
Not sure if lithium is right for your deployment?
The guide and comparison pages cover chemistry, lifecycle cost, temperature performance, and the decision framework for lithium vs lead acid.

Compact and Embedded Lithium UPS

Wall mount, DIN rail, and flat mount options for installations where no cabinet exists — behind displays, inside control panels, on backboards. Fanless — no noise, no moving parts.
Standby · Wall / DIN rail / flat mount
J60 — Ultra-Slim Lithium UPS
350VA · 600VA · 120V or 230V

The thinnest UPS in the Xtreme Power line. Mounts behind kiosk displays, on DIN rails inside control panels, or flat on any surface. No fan — silent in public-facing environments. No battery replacement for the life of the deployment.

Capacities350VA · 600VA
Voltage120V or 230V
MountWall · DIN rail · flat
Max temp50°C · fanless
View J60 →
Standby · 1U short depth · Rack or wall
J60C — Short-Depth Lithium UPS
600VA · 120V or 230V

1U short-depth form factor for shallow wall-mount cabinets, structured wiring enclosures, and IDF installations where standard rack UPS depth won’t fit. Same LiFePO₄ chemistry — no routine battery replacement.

Capacity600VA
Voltage120V or 230V
Form factor1U short depth
MountRack or wall
View J60C →

1U Online Lithium UPS

Online double-conversion with switchable outlets and remote reboot. The primary platform for IDF racks, network infrastructure, and distributed edge deployments. 120V (J90) and 208V/230V (J90i) versions available. 2kVA and 3kVA models provide extended runtime at equivalent loads.
Online · 1U rack · 120V
J90 — 1U Online Lithium UPS
1kVA · 1.5kVA · 2kVA · 3kVA · 120V

Online double-conversion, switchable outlets, remote reboot capability, high-temperature operation to 50°C. The 2kVA and 3kVA models carry extended battery capacity for longer runtime at typical network loads — often eliminating the need to step up to a tower UPS.

Capacities1kVA · 1.5kVA · 2kVA · 3kVA
Voltage120V
TopologyOnline double-conversion
Max temp50°C
View J90 →
Online · 1U rack · 208V/230V
J90i — 1U Online Lithium UPS International
1kVA · 1.5kVA · 2kVA · 3kVA · 208V/230V

Same platform as the J90 — online double-conversion, switchable outlets, remote reboot, 50°C operation — at 208V/230V for international and commercial deployments. J90i for global infrastructure standardization.

Capacities1kVA · 1.5kVA · 2kVA · 3kVA
Voltage208V/230V
TopologyOnline double-conversion
Max temp50°C
View J90i →

Rack and Tower Online Lithium UPS

Online double-conversion in a convertible rack/tower form factor. Higher capacity than the J90 at 1U — suitable for larger network stacks, distributed IT, and multi-device loads. 120V (P91Li) and 208V/230V (P91gLi) versions available.
Online · Rack/tower · 120V
P91Li — Online Lithium UPS
1.5kVA · 2kVA · 3kVA · 120V

Online double-conversion in a convertible rack/tower form factor. Higher capacity than the 1U J90 for larger loads or extended runtime requirements. LiFePO₄ battery eliminates replacement across distributed deployments.

Capacities1.5kVA · 2kVA · 3kVA
Voltage120V
Form factorRack or tower
TopologyOnline double-conversion
View P91Li →
Online · Rack/tower · 208V/230V
P91gLi — Online Lithium UPS International
1.5kVA · 2kVA · 3kVA · 208V/230V

Same platform as the P91Li at 208V/230V for commercial and international deployments. Convertible rack/tower form factor. Online double-conversion with LiFePO₄ battery chemistry.

Capacities1.5kVA · 2kVA · 3kVA
Voltage208V/230V
Form factorRack or tower
TopologyOnline double-conversion
View P91gLi →

Three-Phase Lithium UPS

Internal LiFePO₄ battery modules — no external battery cabinets required. Hot-swappable modules. 12.6″ slim cabinet. The direct replacement for legacy three-phase VRLA UPS systems with external battery frames.
Online · Three phase · 10kW
Li90 10kW
10kVA / 10kW · 208/120V · LiFePO₄

Three-phase online UPS with internal LiFePO₄ batteries. Supports 1–3 hot-swappable battery modules. Up to 87 min at 5kW load (3 modules).

Capacity10kVA / 10kW
Battery modules1–3 hot-swappable
Max temp50°C
View Li90 10kW →
Online · Three phase · 20kW
Li90 20kW
20kVA / 20kW · 208/120V · LiFePO₄

Three-phase online UPS with internal LiFePO₄ batteries. Requires 2–3 hot-swappable battery modules. Up to 22 min at full 20kW load (3 modules).

Capacity20kVA / 20kW
Battery modules2–3 hot-swappable
Max temp50°C
View Li90 20kW →
Online · Three phase · 30kW
Li90 30kW
30kVA / 30kW · 208/120V · LiFePO₄

Three-phase online UPS with internal LiFePO₄ batteries. Requires 3 hot-swappable battery modules. Up to 15 min at full 30kW load. Highest capacity Li90 model.

Capacity30kVA / 30kW
Battery modules3 hot-swappable
Max temp50°C
View Li90 30kW →

Full Li90 platform details — runtime tables, battery module specs, deployment environments: Li90 three-phase lithium UPS guide →

Not sure which capacity you need? Use the UPS sizing tool to calculate runtime for your specific load and battery configuration.
UPS sizing tool →

Talk to an Xtreme Power engineer about lithium UPS selection

Product selection, runtime sizing, lifecycle modeling, and deployment planning — for single-phase and three-phase lithium UPS platforms.