Li90 20 kW: compact three-phase lithium UPS with up to 22 minutes internal runtime
The Li90 20 kW delivers full 20kW three-phase power with integrated LiFePO₄ batteries and up to 22 minutes of internal runtime in a 12.6″ slim cabinet, no external battery cabinets required. Factory start-up and 2 years of on-site service are included in the USA. Designed for facility electrical rooms, telecom infrastructure, and industrial control environments requiring higher-capacity lithium UPS protection in space-constrained locations.
15 or 22 minutes internal runtime, no external cabinets
The Li90 20 kW supports 2 or 3 internal LiFePO₄ battery modules. A minimum of 2 modules is required at 20kW capacity; adding a third extends runtime from 15 to 22 minutes at full load. This internal-runtime capability is uncommon in compact 20kVA UPS systems, competing platforms typically require external battery cabinets to achieve equivalent backup duration.
Each LiFePO₄ module is 50 Ah / 57.6 V / 2,880 Wh · 81 lbs · hot-swappable without powering down the load.
Li90 20 kW platform features
Online double-conversion, zero transfer time
The connected load never operates on raw utility power. No transfer delay during power events. Output is clean, regulated, and protected from upstream disturbances at all times.
50°C operation, telecom and industrial environments
Reliable operation to 50°C (122°F) without derating until 40°C. Suitable for facility electrical rooms, telecom infrastructure, and industrial spaces where VRLA UPS systems require supplemental cooling.
Hot-swappable LiFePO₄ modules, no downtime
Modules are replaced without tools and without powering down the load. Up to 15-year service life in ideal conditions, eliminating the recurring replacement cycles of VRLA battery systems.
4.3″ touchscreen · SNMP · dry contacts
Color touchscreen with single-line mimic, event logging, and access control. Two slots for SNMP/Web management cards. Programmable dry contacts (1 in / 5 out) for facility integration and BMS connectivity.
Maintenance bypass, no external switchgear
Integrated maintenance bypass allows safe servicing without powering down the load. No external bypass cabinet or switchgear required, simplifying installation in constrained electrical rooms.
110% overload for 60 min · 150% for 1 min
High overload capacity handles inrush and startup surges from motors, compressors, and inductive facility loads without nuisance tripping or transfer to bypass.
Li90 20 kW vs. typical 20kVA VRLA UPS systems
| Feature | Li90 20 kW | Typical 20kVA VRLA UPS |
|---|---|---|
| Internal runtime | Up to 22 min | 5–10 min |
| External cabinets required | No | Yes for >10–15 min |
| Battery technology | LiFePO₄ lithium | VRLA lead acid |
| Battery service life | Up to 15 years | 3–5 years |
| Operating temperature | 50°C | 40°C UPS; batteries rated at 25°C |
| Cabinet footprint | 12.6″ · compact single cabinet | Large with external battery frames |
| Installation complexity | Low | Higher |
| Battery service | Hot-swap · no downtime | Downtime planning required |
See head-to-head comparisons against Eaton, Vertiv, and APC on the Li90 comparison hub →
Li90 20 kW specifications
| Rated power | 20 kVA / 20 kW |
| Topology | Online double-conversion |
| Input voltage | 208/120V · 3-phase · 4W + G |
| Output voltage | 208/120V · 3-phase |
| Battery chemistry | LiFePO₄ (lithium iron phosphate) |
| Battery module capacity | 50 Ah / 57.6 V / 2,880 Wh · 81 lbs each |
| Battery modules | 2–3 (minimum 2 required, hot-swappable) |
| Internal runtime | 15 min (2 modules) · 22 min (3 modules) at 20kW |
| Battery service life | Up to 15 years ideal conditions · 3,000–5,000 cycles |
| Operating temperature | Up to 50°C (122°F) · no derating to 40°C |
| Cabinet width | 12.6″ |
| System weight | 227 lbs cabinet + 81 lbs per module · approx 390 lbs with 2 modules |
| Battery location | Internal, no external cabinets required |
| Overload | 110% for 60 min · 150% for 1 min |
| Display | 4.3″ color touchscreen · single-line mimic · event log |
| Communication | 2 slots, optional SNMP/Web · dry contacts (1 in / 5 out) |
| Approvals | UL 1778 · UN 38.3 · UL 1973 · not currently cUL |
| Warranty and service | 2 years UPS, 5 years battery (USA; battery 2 years for 40–50°C ambient). Factory start-up and 2 years on-site service within 100 miles of an XPC service center; travel charges apply beyond. 2 years depot repair outside the USA. |
Li90 20 kW deployment environments
Li90 three-phase lithium UPS, all capacities
Documentation
Li90 20 kW: frequently asked questions
What is the runtime of the Li90 20 kW?
Why does the 20 kW model need at least two battery modules?
Does the Li90 20 kW need external battery cabinets?
How does the Li90 20 kW compare to a 20kVA VRLA UPS?
What service and warranty are included?
What electrical service does it need?
Configure the Li90 20 kW for your site
Module configuration, runtime sizing, site evaluation, and installation planning for the Li90 20 kW. Our specialists will match module count and runtime to your load and environment.