P91-2kLi vs APC SMTL2200RM2UCNC
The P91-2kLi and APC SMTL2200RM2UCNC are both 2 kVA-class lithium UPS on different platforms. The P91-2kLi is online double-conversion on LiFePO₄ batteries; the APC is line-interactive lithium-ion with integrated network management. The P91-2kLi delivers nearly double the full-load runtime in a shallower chassis.
What the P91-2kLi brings
- Online double-conversion with zero transfer time
- LiFePO₄ chemistry, up to 15-year design life
- Nearly double runtime at full load (13 min vs 7 min 24 s)
- Faster recharge (1.5 h vs 2 h to 90%)
- Shallower rack depth (20 in vs 26.9 in)
- TAA compliance and a 6-year warranty
Side-by-side specifications
| Specification | Xtreme Power P91-2kLi | APC SMTL2200RM2UCNC | Advantage |
|---|---|---|---|
| Battery chemistry | LiFePO₄ | Lithium-ion | P91 – longer life, thermal stability |
| Battery life | Up to 15 yr / 3,000–5,000 cycles | 8–10 years typical | P91 – longer service life |
| Topology | Online double-conversion | Line-interactive | P91 – zero transfer time |
| Capacity | 2000 VA / 1800 W | 2000 VA / 1920 W | Comparable real power |
| High-temperature operation | Up to 50°C, derates above 40°C | Rated to 40°C | P91 – hot edge environments |
| Recharge | 1.5 h to 90% | 2 h to 90% | P91 – faster recovery |
| Runtime (full load) | 13 min | 7 min 24 s | P91 – nearly double runtime |
| Rack height / depth | 2U / 20.0 in | 2U / 26.9 in | P91 – shallower footprint |
| Network management | Optional Web/SNMP (SNMP-2PV3) | Integrated network management | APC – integrated by default |
| TAA compliance | Yes | No | P91 – federal procurement |
| Warranty | 6-year UPS & battery | 5-year UPS & battery | P91 – longer coverage |
Specifications from Xtreme Power’s supplied P91-2kLi vs APC SMTL2200RM2UCNC comparison; confirm against current vendor documentation. The APC SMTL2200 carries a marginally higher watt rating (1920 W).
Choosing between them
Comparable real power. The P91-2kLi leads decisively on runtime (nearly 2x), recharge, topology, lifecycle, temperature, depth, and TAA; the APC includes network management by default and rates marginally higher watts.
Choose the P91-2kLi if you need
- Mission-critical IT and network infrastructure
- Hot or non-conditioned edge environments
- Zero transfer time with much longer runtime
- Federal / regulated procurement requiring TAA
The SMTL2200RM2UCNC may fit if you need
- General IT tolerant of line-interactive transfer time
- Integrated network management out of the box
- Sites standardized on APC lithium Smart-UPS
Related comparisons
Standardizing on lithium rack UPS?
Xtreme Power supports UPS selection, lifecycle planning, and distributed infrastructure design for lithium rack UPS across IT, networking, and regulated environments.