J90 – 1U High-Density Online Lithium 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
Full rated output to 50°C, in one rack unit
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 North American IT closets, edge sites, AV racks and industrial infrastructure on standard 120V circuits.
What makes the J90 the premium 1U lithium rack UPS
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.
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, 3 to 4 times the life of VRLA. Across distributed deployments with 20 or 50 UPS units, eliminating the 3–5 year VRLA replacement cycle is a significant operational and cost advantage.
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 delivers full rated output to 50°C with no capacity derating — a 3kVA unit is still a 3kVA unit at 122°F. Most competing platforms derate above 40°C, which means sizing for the room rather than the load. Warranty terms differ for continuous operation above 40°C.
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.
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. The J90-1.5kLiX will add the same capability at 1.5 kVA: rated 1500 VA / 1500 W with a NEMA 5-15P plug, it brings extended runtime to standard 15 A circuits. It is not yet available. See the full runtime table below for exact values by load and pack count.
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.
ROO / RPO — remote on and off
Remote On/Off and Remote Power Off contacts start and shut down the UPS from a dry contact, independent of the network card. That covers emergency power-off interlocks and building-system sequencing, and it works whether or not an SNMP card is fitted.
$50,000 connected-equipment protection
In the USA and Canada, the J90 carries a $50,000 load protection policy covering equipment connected to the UPS, with registration required within 10 days of purchase. For an edge or AV rack holding switches, controllers and processors, that is coverage on the load rather than just on the UPS.
Where J90 fits in the Xtreme Power lithium lineup
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.
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 at full rated output | 40°C typical | 40°C typical | 40°C typical | 40°C typical |
| Wall mount | Yes — brackets included | Yes | No | No | Optional |
| TAA compliance | Standard on every model | Separate TAA part number | Separate TAA part number | Separate TAA part number | Separate TAA part number |
| Warranty | 6 years | 5 years | 3 years | 2 years | 3 years |
Based on published manufacturer data, September 2026. Competitor configurations, outlet control and TAA part-number availability vary by model — verify current specifications and part numbers before specifying.
View J90 comparisons →
J90 Series specifications
| Attribute | J90 Series |
|---|---|
| Topology | Online double-conversion |
| Capacity | 1000VA / 1500VA / 2000VA / 3000VA |
| Input voltage | 125 / 120 / 110 VAC |
| Output voltage | 125 / 120 / 110 VAC |
| Frequency | 50/60 Hz auto-sensing |
| Efficiency | Online mode — up to 92% (1kVA) · 92% (1.5kVA LiD) · 93% (1.5kVA LiX) · 93% (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 | Full rated output to 50°C (122°F) with no capacity derating · warranty terms differ for continuous operation above 40°C |
| Form factor | 1U rackmount |
| Dimensions (W×D×H) | 1kLiD: 17.2 × 18.8 × 1.7 in · 1.5kLiD: 17.2 × 20.1 × 1.7 in · 1.5kLiX / 2kLiD / 3kLiD: 17.2 × 22.8 × 1.7 in |
| Weight | 1kLiD: 26.8 lbs · 1.5kLiD: 27.7 lbs · 1.5kLiX / 2kLiD: 34.1 lbs · 3kLiD: 35.2 lbs |
| Internal battery | LFP 25.6V / 6Ah (1kVA) · 38.4V / 6Ah (1.5kVA) · 51.2V / 5Ah (2kVA and 3kVA) |
| Typical recharge | 4 hours (1kVA and 1.5kVA) · 1 hour (2kVA and 3kVA) |
| EBP48 battery pack | 17.2 × 22.8 × 1.7 in · 30.8 lbs (14 kg) |
| Altitude | Up to 6,500 ft (2,000 m) |
| Overload capacity | ≤130% for 2 min · 130–200% for 10 s · >200% for 250 ms |
| 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) · 1.5kLiX not yet available |
| Monitoring | Optional SNMP/Web card |
| Communication | USB · RS-232 · optional SNMP |
| Remote contacts | ROO (remote on/off) and RPO (remote power off) dry contacts, independent of the SNMP card |
| Load protection | $50,000 connected-equipment protection policy (USA and Canada); registration required within 10 days of purchase |
| Warranty | 6 years electronics + 6 years battery (USA and Canada) · 2 years for continuous operation above 40°C · 2 years depot outside the USA and Canada |
| Included in box | ViewPower software · wall-mount brackets · user manual |
| Available options | Bypass distribution (XBDM) · power distribution (XPDU) · 4-post rail kit · 2-post shelf kit |
| Certifications | UL-1778 · cUL · UN38.3 · RoHS · FCC Class A · TAA compliant |
J90 / J90i runtime table — estimated minutes by load and battery configuration
Runtime values are estimated minutes at the load shown. Internal battery only for the 1kVA and 1.5kLiD models. The 2kVA and 3kVA models support up to six EBP48 external battery packs. * J90-1.5kLiX is not yet available; those rows are shown for planning only. 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 |
1500VA 1500W |
1800VA 1620W |
2000VA 1800W |
2667VA 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 | — | — | — | — | — |
| J90-1.5kLiX* | — | 72 | 54 | 36 | 28 | 20 | 15 | 12 | 10 | 8.6 | 8 | 7.2 | — | — | — | — |
| J90-1.5kLiX + 1 EBP48* | — | 360 | 270 | 180 | 142 | 100 | 75 | 60 | 50 | 43 | 40 | 36 | — | — | — | — |
| J90-1.5kLiX + 2 EBP48* | — | 648 | 486 | 324 | 255 | 180 | 135 | 108 | 90 | 77 | 72 | 65 | — | — | — | — |
| J90-1.5kLiX + 3 EBP48* | — | 937 | 703 | 468 | 368 | 260 | 195 | 156 | 130 | 111 | 104 | 93 | — | — | — | — |
| J90-1.5kLiX + 4 EBP48* | — | 1225 | 919 | 613 | 481 | 340 | 255 | 204 | 170 | 146 | 136 | 123 | — | — | — | — |
| J90-1.5kLiX + 5 EBP48* | — | 1513 | 1135 | 757 | 594 | 420 | 315 | 252 | 210 | 180 | 168 | 151 | — | — | — | — |
| J90-1.5kLiX + 6 EBP48* | — | 1800 | 1351 | 901 | 708 | 500 | 375 | 300 | 250 | 214 | 200 | 180 | — | — | — | — |
| J90-2kLiD | — | — | 54 | 36 | 28 | 20 | 15 | 12 | 10 | 8.6 | 8 | 7.2 | 6.7 | 6 | — | — |
| J90-2kLiD + 1 EBP48 | — | — | 270 | 180 | 142 | 100 | 75 | 60 | 50 | 43 | 40 | 36 | 33 | 30 | — | — |
| J90-2kLiD + 2 EBP48 | — | — | 486 | 324 | 255 | 180 | 135 | 108 | 90 | 77 | 72 | 65 | 60 | 54 | — | — |
| J90-2kLiD + 3 EBP48 | — | — | 703 | 468 | 368 | 260 | 195 | 156 | 130 | 111 | 104 | 93 | 87 | 78 | — | — |
| J90-2kLiD + 4 EBP48 | — | — | 919 | 613 | 481 | 340 | 255 | 204 | 170 | 146 | 136 | 123 | 113 | 102 | — | — |
| J90-2kLiD + 5 EBP48 | — | — | 1135 | 757 | 594 | 420 | 315 | 252 | 210 | 180 | 168 | 151 | 140 | 126 | — | — |
| J90-2kLiD + 6 EBP48 | — | — | 1351 | 901 | 708 | 500 | 375 | 300 | 250 | 214 | 200 | 180 | 167 | 150 | — | — |
| J90-3kLiD | — | — | — | 38 | 28 | 20 | 15 | 12 | 10 | 8.6 | 8 | 7.2 | 6.7 | 6 | 4.5 | 4 |
| J90-3kLiD + 1 EBP48 | — | — | — | 189 | 142 | 98 | 73 | 60 | 50 | 43 | 40 | 36 | 33 | 30 | 23 | 20 |
| J90-3kLiD + 2 EBP48 | — | — | — | 341 | 256 | 176 | 132 | 108 | 90 | 77 | 72 | 65 | 60 | 54 | 41 | 36 |
| J90-3kLiD + 3 EBP48 | — | — | — | 492 | 369 | 254 | 191 | 156 | 130 | 111 | 104 | 93 | 87 | 78 | 59 | 52 |
| J90-3kLiD + 4 EBP48 | — | — | — | 644 | 483 | 333 | 249 | 204 | 170 | 146 | 136 | 123 | 113 | 102 | 77 | 68 |
| J90-3kLiD + 5 EBP48 | — | — | — | 795 | 596 | 411 | 308 | 252 | 210 | 180 | 168 | 151 | 140 | 126 | 95 | 84 |
| J90-3kLiD + 6 EBP48 | — | — | — | 946 | 710 | 489 | 367 | 300 | 250 | 214 | 200 | 180 | 167 | 150 | 113 | 100 |
All values in estimated minutes. Actual runtime varies by battery age, ambient temperature, and load profile. Download runtime PDF → · UPS sizing tool →J90 1U lithium UPS overview →J90i — 208-240V version →J60 — ultra-slim lithium UPS →
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 — contact sales for availability.
Certifications
Documentation
J90: frequently asked questions
What is the difference between the J90 and the J90i?
Input voltage. The J90 is the 120 V model for North American racks on standard 120 V circuits; the J90i is the 208–240 V version for higher-voltage racks and international sites. Same 1U chassis, LiFePO₄ chemistry, online double-conversion topology and per-outlet control.
Why does 50 °C matter if my closet is air conditioned?
Because most IDF closets, telecom rooms and industrial enclosures are not, or not reliably. They regularly sit at 35–40 °C, and VRLA batteries specified at 25 °C degrade rapidly above 30 °C. The J90 delivers full rated output to 50 °C with no capacity derating, so a 3 kVA unit is still a 3 kVA unit at 122 °F. Warranty terms differ for continuous operation above 40 °C.
How long do the batteries last?
LiFePO₄ cells are rated for 3,000 to 5,000 discharge cycles and up to 15 years of service life in ideal conditions, 3 to 4 times the life of VRLA. Across 20 or 50 sites, removing the 3 to 5 year VRLA replacement cycle removes both the parts cost and the site visit.
What does individual outlet switching give me?
Remote recovery without a truck roll. Each outlet switches independently, so a frozen switch, a hung firewall or a crashed controller can be power-cycled remotely without touching the rest of the rack.
Can I extend the runtime?
Yes, on the 2 kVA and 3 kVA models, which take up to six EBP48 external LiFePO₄ packs. The J90-1.5kLiX will add the same capability at 1500 VA / 1500 W on a 5-15P plug for standard 15 A circuits; it is not yet available.
Can the J90 be wall mounted?
Yes, and the brackets are included. It occupies 1U in a standard rack or mounts on a wall with the supplied hardware, so the same unit covers either deployment.
Is the J90 TAA compliant?
Yes, as standard on every model. That matters on federal, state, education and healthcare contracts, where competing 1U platforms often need a separate TAA part number.
What is the warranty, and is connected equipment covered?
Six years on electronics and battery in the USA and Canada, reducing to two years for continuous operation above 40 °C, and two years depot repair outside the USA and Canada. In the USA and Canada a $50,000 load protection policy covers connected equipment, with registration required within 10 days of purchase.
Talk to an engineer about the J90
Sizing, runtime planning, EBP48 pack configuration, TAA procurement support, and deployment guidance for distributed and edge infrastructure.
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