Uninterruptible Power Supply UPS APC SRTL1000RMXLI-NC

The APC SRTL1000RMXLI-NC is a 1 kVA double-conversion online UPS designed for rack installation (3U) to protect critical equipment. It provides 900 W of output power through eight C13 AC outlets and uses an internal lithium-ion battery with a long service life and a six-hour recharge time. The unit supports hot-swappable and plug-and-play external batteries, temperature-compensated charging, and scalable runtime to meet growing backup needs while maintaining continuous, regulated power.

Advantages

This UPS offers online double-conversion topology for consistent, clean sine-wave output and zero transfer time to battery. Intelligent battery management and temperature-compensated charging extend battery life and reliability, while hot-swappable batteries and automatic internal bypass ensure uninterrupted operation during maintenance or overload. The device is rack/tower convertible and flash-upgradeable, enabling flexible deployment and future updates.

Suitable for

• Server rooms and small data centres requiring continuous 900 W protection
• Network devices and rack-mounted equipment in 3U space
• Environments using active PFC power supplies
• Locations where remote monitoring and network manageability are needed

When it may not be suitable

This UPS is sized for 1 kVA (900 W) loads; it is not appropriate for installations with significantly higher power demands without additional or larger units. Environments needing more than eight outlets or different outlet types may require external distribution or a different model. For users requiring passive or standby UPS topologies, the double-conversion design may be more complex and costly than necessary.

Key specifications

• Output power: 900 W
• Rated capacity: 1 kVA
• AC outlets: 8 × C13
• Battery type: Lithium-ion (internal)
• Battery recharge time: ~6 hours
• Form factor: Rackmount (3U), convertible to tower
• Dimensions (W×D×H): 432 mm × 590 mm × 128 mm
• Weight: 25.7 kg
• Input/output voltage: AC 230 V
• Connectivity: Ethernet 10/100, RS-232, USB

How to use

Install the UPS in a standard 19-inch rack using the 3U mounting kit or set it up as a tower using the convertible feet. Connect the critical equipment to the eight C13 outlets, and connect the UPS to the mains supply. Configure network or serial connections for remote monitoring if required, and install management software for orderly shutdowns and alerts. Replace or add hot-swappable external battery modules without powering down the protected equipment when extended runtime is needed.

What to consider before purchase

• Confirm total connected load does not exceed 900 W continuous output
• Check outlet type and quantity to ensure compatibility with your devices
• Plan rack space (3U) or tower placement and ventilation requirements
• Consider whether network management (Ethernet/serial/USB) is required
• Evaluate future runtime needs and possibility of external battery packs

Usage recommendations

Use this APC Smart-UPS On-Line 1000VA in rack-mounted IT environments with active PFC servers and network equipment. Enable network management and regular automatic self-tests, follow the manufacturer’s guidelines for battery replacement, and allow adequate ventilation to ensure optimal performance and battery life.