APC Smart-UPS Ultra 8kVA/8kW Lithium-Ion Rack/Tower UPS (SRTL8KRM4UI)
APC Smart-UPS Ultra 8kVA/8kW Lithium-Ion Rack/Tower UPS (SRTL8KRM4UI)
The APC Smart-UPS Ultra SRTL8KRM4UI is an 8kVA/8kW online double-conversion lithium-ion UPS in a compact 4U rack/tower form factor. It is up to 50% lighter than equivalent VRLA UPS systems, offers a 10-year design life battery (versus 3 to 5 years for VRLA), and delivers full 8kW of usable power at a unity output power factor of 1.0 -- making it one of the most advanced 8kVA lithium-ion UPS systems available in Australia.
Why Lithium-Ion Changes the UPS Equation
Most UPS systems in Australia still use VRLA (valve-regulated lead acid) batteries. These work reliably but carry significant disadvantages compared to lithium-ion: they have a 3 to 5 year service life requiring regular replacement, are heavy (an 8kVA VRLA UPS can weigh 80 to 100kg), recharge slowly (typically 4 to 8 hours to 90% capacity), and degrade significantly in high ambient temperatures.
The APC Smart-UPS Ultra SRTL8KRM4UI uses lithium-ion batteries with a 10-year design life and significantly faster recharge. In Australian environments -- particularly Queensland, Western Australia and the Northern Territory -- where plant room temperatures regularly exceed 30 degrees C, lithium-ion batteries retain capacity far better than VRLA equivalents. The result is lower total cost of ownership, fewer battery replacements, and a more reliable system over its lifetime.
At 4U and significantly lighter than VRLA alternatives, the Smart-UPS Ultra also suits high-density rack deployments, edge sites and locations where weight is a constraint -- including wall-mounted comms rooms and raised-floor installations with weight limits.
Key Features
- 8kVA / 8kW capacity with unity power factor (1.0) -- full 8kW to your load, not 6.4kW like a 0.8 PF equivalent
- Lithium-ion battery with 10-year design life -- significantly reduces battery replacement frequency and long-term maintenance cost
- Up to 50% lighter than equivalent VRLA UPS -- easier installation, less floor loading, suitable for weight-constrained sites
- True online double-conversion (VFI) topology -- zero transfer time, continuous power conditioning, maximum load protection
- 4U rack/tower convertible form factor -- installs in a standard 19-inch rack or stands as a tower with the included stand
- Scalable runtime via external battery module (SRTLBP10KRM4U) -- add runtime without replacing the base unit
- Network management card slot (AP9640/AP9641 compatible) -- SNMP/web monitoring and graceful shutdown integration
- LCD display with configurable outlet groups -- manage load priority and scheduled shutdowns
- Automatic self-test and remote monitoring -- reduces manual inspection requirement
- 230V single phase input/output -- direct compatibility with Australian standard power supply
Technical Specifications
| Parameter | SRTL8KRM4UI |
|---|---|
| Rated Capacity | 8kVA / 8kW |
| Topology | Online double conversion (VFI) |
| Output Power Factor | 1.0 (unity) |
| Phase Configuration | Single phase in / single phase out (1:1), 230V |
| Form Factor | 4U rackmount / tower convertible |
| Battery Type | Lithium-ion (Li-ion) |
| Battery Design Life | 10 years (vs 3 to 5 years VRLA) |
| Weight Advantage | Up to 50% lighter than equivalent VRLA UPS |
| Runtime Extension | Via SRTLBP10KRM4U external battery module |
| Network Management | AP9640 / AP9641 card slot (optional) |
| Input Voltage | 230V, single phase, 50Hz |
| Warranty | 3-year APC manufacturer warranty |
Lithium-Ion vs VRLA -- At a Glance
| Factor | VRLA (standard) | Lithium-Ion (this unit) |
|---|---|---|
| Battery design life | 3 to 5 years | 10 years |
| Weight | Heavy (80 to 100kg+ at 8kVA) | Up to 50% lighter |
| Recharge time | 4 to 8 hours to 90% | Significantly faster |
| High temperature performance | Capacity drops above 25 degrees C | Better retention in warm environments |
| Replacement frequency | Every 3 to 5 years | Approximately every 10 years |
Best Suited For
- Server rooms and comms rooms where weight or floor loading is a constraint
- Edge computing, retail and distributed network sites
- Data centres requiring high-density, long-life battery backup
- Healthcare facilities, hospitals and medical imaging
- Government, defence and secure facilities
- Telecommunications equipment rooms and network operations centres
- Banking, financial services and insurance infrastructure
- Any site in a warm climate (QLD, WA, NT) where VRLA battery degradation is a recurring issue
Available Across Australia
Indigi Power and Cooling supplies the APC Smart-UPS Ultra SRTL8KRM4UI across Australia with APC-certified installation and commissioning from three national service hubs:
|
Brisbane CBD, Gold Coast, Sunshine Coast, Ipswich, Townsville, Cairns, regional QLD |
Sydney CBD, Parramatta, North Ryde, Newcastle, Wollongong, Canberra (ACT) |
|
Melbourne CBD, Dandenong, Geelong, Ballarat, regional Victoria |
Perth, Adelaide, Darwin and NT Serviced from our national hubs. Contact us to discuss scheduling and logistics. |
Supply only or full supply, installation and commissioning available nationally. View single phase UPS installation details.
Supply, Installation and Maintenance
As APC-authorised partners, Indigi Power and Cooling provides the full service lifecycle for the Smart-UPS Ultra:
- Single Phase UPS Installation and Commissioning
- Single Phase UPS Maintenance Australia
- UPS Maintenance Plans and Pricing
- UPS Runtime and Battery Sizing Calculator
Downloads
- APC Smart-UPS Ultra up to 10kW 230V Brochure (PDF)
- SRTL8KRM4UI Product Page (Schneider Electric)
- APC Smart-UPS Ultra Product Overview (YouTube)
- APC Smart-UPS Ultra Installation Guide (YouTube)
Need help confirming runtime, comparing the 8kVA to the 10kVA model, or adding an external battery module? Contact our team or use our UPS runtime calculator to size the system for your load.
Partner with Us
Reliable Power & Cooling Solutions from Indigi Power & Cooling Expert supply, installation, and contracting services for critical infrastructure across Australia.