J90 Lithium UPS — 1U High-Density Online Rack UPS

1000–3000 VA | 120V | 1U Online Double-Conversion UPS

High-density lithium rack UPS engineered for distributed IT, AV, telecommunications, and industrial infrastructure requiring conditioned power, compact deployment, and operational control at the rack level.


1U Rack · Online Double-Conversion · LiFePO₄ · 120V · 1–3kVA

J90 — 1U High-Density Online Lithium Rack UPS

Online double-conversion power protection in a 1U form factor with LiFePO₄ battery chemistry — up to 15-year service life, 50°C operation, individual outlet control, and external battery pack support on 2kVA and 3kVA models. The premium 1U lithium rack UPS for distributed IT, edge, AV, and industrial infrastructure.


J90 1U lithium UPS installed in rack at slot 34 — LCD display showing live status, Xtreme Power branding visible, online double-conversion active

J90 1U lithium UPS in a standard rack — LCD display showing live operating status, battery voltage, and runtime remaining

1U
Rack height
Wall mount capable

1–3kVA
Capacity range
120V single phase

15 yr
Battery life
ideal conditions · LiFePO₄

50°C
Max operating temp
non-conditioned spaces

94.5%
Efficiency
online peak · ECO >96%

6 yr
Warranty
USA and Canada

Key features

What makes the J90 the premium 1U lithium rack UPS

Topology

Online double-conversion — zero transfer time

The J90 continuously regenerates output power through the inverter — the connected load never operates on raw utility power. No transfer delay during a power event. Output power is clean, regulated, and isolated from upstream disturbances regardless of input conditions.

Battery chemistry

LiFePO₄ — up to 15 years, no routine replacement

LiFePO₄ (lithium iron phosphate) batteries are rated for 3,000–5,000 discharge cycles and up to 15 years service life in ideal conditions. Across distributed deployments with 20 or 50 UPS units, eliminating the 3–5 year VRLA replacement cycle is a significant operational and cost advantage.

Thermal performance

50°C operation — no cooling dependency

IDF closets, telecom rooms, and industrial enclosures regularly exceed 35–40°C. VRLA batteries specified at 25°C degrade rapidly above 30°C. The J90’s LiFePO₄ battery and thermal design support reliable operation to 50°C — covering the full range of real-world rack deployment environments.

Outlet control

Individual outlet switching — remote reboot without a truck roll

Each outlet is individually switchable — a frozen switch, a hung firewall, a crashed controller can be power-cycled remotely without dispatching a technician. Across a campus with 20 IDF locations, that capability pays for itself after the first avoided service call.

Extended runtime

Up to 6 × EBP48 external packs — 2kVA and 3kVA models

The J90-2kLiD and J90-3kLiD support up to six EBP48 external LiFePO₄ battery packs for extended runtime — without the size and weight of VRLA battery cabinets. See the full runtime table below for exact values by load and pack count.

Form factor

1U rack — also wall-mount with included brackets

The J90 occupies 1U in a standard rack and mounts on any wall with the included bracket hardware. In IDF closets with wall-mount racks, the J90 installs clean without adapters or additional hardware — same unit, same bracket, either deployment.

Pair with SPDU Smart PDU for complete rack power control
The J90’s individual outlet switching combined with the SPDU’s outlet-level metering and monitoring creates a complete rack power management solution — UPS runtime at the device level, visibility and remote control at the PDU level.

View SPDU Smart PDU →

Portfolio position

Where J90 fits in the Xtreme Power lithium lineup

Xtreme Power lithium rack UPS architecture

J60C
600VA · 1U short-depth · shallow racks and wall-mount cabinets

View J60C →

P91Li
1–3kVA · 2U · standard lithium rack/tower UPS

View P91Li →

J90 ← this platform
1–3kVA · 1U · high-density premium lithium UPS

You are here

Li90
10–30kW · three-phase · facility-level lithium UPS

View Li90 →

J90 is the right choice when 1U density, individual outlet control, and lifecycle performance are priorities. When form factor is standard 2U rack/tower and lowest upfront cost matters, consider the P91Li. When depth is the constraint, consider the J60C.

Platform comparison

J90 vs competing 1U lithium rack UPS platforms

Engineers evaluating 1U lithium rack UPS platforms commonly compare the J90 against APC Smart-UPS Ultra, Eaton 9PX Lithium, Vertiv Liebert GXT5, and Middle Atlantic NexSys. The primary differentiators are form factor, topology, individual outlet control, temperature rating, and external runtime capability.

Feature J90 APC Smart-UPS Ultra Eaton 9PX Lithium Vertiv GXT5 Li Middle Atlantic NexSys
Form factor 1U 1U 2U 2U 2U
Topology Online double-conversion Online double-conversion Online double-conversion Online double-conversion Online double-conversion
Battery chemistry LiFePO₄ Lithium-ion Lithium-ion / LFP Lithium-ion LiFePO₄
Individual outlet control Yes — per outlet No No No Select models
External battery support Yes — 2kVA and 3kVA Yes Yes Yes No
Max operating temp 50°C 40°C typical 40°C typical 40°C typical 40°C typical
Wall mount Yes — brackets included No No No Optional
TAA compliant Yes No No No No
Warranty 6 years 5 years 3 years 2 years 3 years
For full model-by-model comparisons against APC Smart-UPS Ultra, Eaton 9PX Lithium, Vertiv GXT5 Li, and Middle Atlantic NexSys, see the J90 competitive comparison hub.
View J90 comparisons →

Technical specifications

J90 Series specifications

Attribute J90 Series
Topology Online double-conversion
Capacity 1000VA / 1500VA / 2000VA / 3000VA
Input voltage 120V AC
Output voltage 120V AC
Frequency 50/60 Hz auto-sensing
Efficiency Online mode — up to 88% (1kVA) · 91% (1.5kVA) · 92% (2kVA) · 94.5% (3kVA) · ECO mode >96% (all models)
Battery chemistry LiFePO₄ (lithium iron phosphate)
Battery service life Up to 15 years — ideal conditions · 3,000–5,000 cycles
Operating temperature Up to 50°C (122°F) · derating may apply above 40°C
Form factor 1U rackmount
Mounting Rack or wall — brackets included standard
Outlet control Individual switchable outlets
Extended runtime External EBP48 packs — 2kVA and 3kVA models (up to 6 packs)
Monitoring Optional SNMP/Web card
Communication USB · RS-232 · optional SNMP
Warranty 6 years — USA and Canada · 2 years above 40°C continuous
Certifications UL-1778 · cUL · UN38.3 · RoHS · FCC Class A · TAA compliant

Runtime data

J90 / J90i runtime table — estimated minutes by load and battery configuration

Runtime values are estimated minutes at the load shown. Internal battery only for 1kVA and 1.5kVA models. The 2kVA and 3kVA models support up to six EBP48 external battery packs. Actual runtime varies by battery age, temperature, and load profile.

Model / Configuration 100VA
90W
150VA
135W
200VA
180W
300VA
270W
400VA
360W
600VA
540W
800VA
720W
1000VA
900W
1200VA
1080W
1400VA
1260W
1500VA
1350W
1600VA
1440W
1800VA
1620W
2000VA
1800W
2333VA
2100W
2666VA
2400W
3000VA
2700W
J90-1kLiD 53 35 30 21 16 11 8.1 6.5
J90-1.5kLiD 59 44 33 24 17 13 10.5 8.8 7.5 7
J90-2kLiD 54 36 28 20 15 12 10 8.6 8 7.5 6.7 6
J90-2kLiD + 1 EBP48 270 180 142 100 75 60 50 43 40 38 33 30
J90-2kLiD + 2 EBP48 486 324 255 180 135 108 90 77 72 68 60 54
J90-2kLiD + 3 EBP48 703 468 368 260 195 156 130 111 104 98 87 78
J90-2kLiD + 4 EBP48 919 613 481 340 255 204 170 146 136 128 113 102
J90-2kLiD + 5 EBP48 1135 757 594 420 315 252 210 180 168 158 140 126
J90-2kLiD + 6 EBP48 1351 901 708 500 375 300 250 214 200 188 167 150
J90-3kLiD 38 28 20 15 12 10 8.6 8 7.5 6.7 6 5.1 4.5 4
J90-3kLiD + 1 EBP48 189 142 98 73 60 50 43 40 38 33 30 26 23 20
J90-3kLiD + 2 EBP48 341 256 176 132 108 90 77 72 68 60 54 46 41 36
J90-3kLiD + 3 EBP48 492 369 254 191 156 130 111 104 98 87 78 67 59 52
J90-3kLiD + 4 EBP48 644 483 333 249 204 170 146 136 128 113 102 87 77 68
J90-3kLiD + 5 EBP48 795 596 411 308 252 210 180 168 158 140 126 108 95 84
J90-3kLiD + 6 EBP48 946 710 489 367 300 250 214 200 188 167 150 129 113 100

All values in estimated minutes. Actual runtime varies by battery age, ambient temperature, and load profile. Download runtime PDF → · UPS sizing tool →

Coming soon
J90-1.5kLiX — extended runtime 1.5kVA with external battery pack support

The J90-1.5kLiX adds EBP48 external battery pack compatibility to the 1.5kVA model — combining the J90’s online double-conversion topology, switchable outlets, LiFePO₄ chemistry, and 50°C operation with the extended runtime flexibility currently available only on the 2kVA and 3kVA models. Not yet available — check the product page for availability.

Certifications and documentation

Certifications

UL-1778
cUL
UN38.3
RoHS
FCC Class A
TAA Compliant

Documentation

Talk to an engineer about the J90

Sizing, runtime planning, EBP48 pack configuration, TAA procurement support, and deployment guidance for distributed and edge infrastructure.