Introduction – The 24V/48V DC Backup Gap in Modern Telecom Deployments
Most outdoor wireless CPEs, point-to-point radios, FTTH ONUs, and 4G/5G small cells run on 24V or 48V DC. Standard 12V Mini UPS units cannot power them. Mismatched voltage leads to boot failures, inefficient operation, or permanent damage.
Telecom operators and ISPs need a dedicated DC backup solution that matches real-world infrastructure voltage. The Mylion MU248 LiFePO4 Mini UPS addresses exactly this gap – a dual-voltage DC UPS engineered for 24V and 48V telecom equipment.
Why 24V and 48V? – The Standard Voltages of Telecom Infrastructure
48V DC – Backbone and Wireless Networks
-48V DC is the de facto standard for macro base stations, remote radio units (RRUs), and microwave transmission systems. The voltage stays below 50V, complying with safety extra-low voltage (SELV) limits while delivering sufficient power for long cable runs. Direct battery backup is simple and efficient – no AC-DC-AC conversion losses.
24V DC – Edge Networks and Industrial Communication
Fiber access nodes (FTTH), outdoor wireless bridges, industrial routers, and security communication links widely adopt 24V systems. This voltage suits medium-power edge devices where lower distribution loss and component availability matter.
The Cost of Voltage Mismatch
Using a 12V UPS on a 48V radio simply does not work. Conversely, feeding 48V into a 24V router will destroy its power stage. Even within acceptable ranges, mismatched voltage forces DC-DC converters to run inefficiently, wasting battery capacity and generating excess heat.
Voltage Compatibility Dilemma
Many sites contain both 24V and 48V equipment – for example, a 48V radio plus a 24V router. Traditional solutions require two separate backup units, doubling cost, space, and maintenance.
Environmental Toughness
Outdoor cabinets, rooftop base stations, and roadside nodes face temperature swings, dust, humidity, and vibration. Backup hardware must tolerate these conditions without failure.
Space Constraints
Telecom enclosures are compact. Standard AC UPS units are too bulky. A lightweight, miniaturized DC UPS is essential for distributed deployments.
Operational Efficiency
Thousands of remote nodes make manual battery checks prohibitive. Long-life, low-maintenance lithium batteries (LiFePO₄) drastically reduce total cost of ownership compared to lead-acid.
The Mylion MU248 DC UPS is designed specifically for telecom and wireless network infrastructure that operates on 24V or 48V. With LiFePO₄ battery and zero-transition switching, it is ready for global ISP and telecom deployments in street cabinets, rooftop nodes, and remote outdoor sites.
Key Specifications
Parameter | Value |
Output 1 | 24V DC / 3A Max |
Output 2 | 48V DC / 1A Max |
Battery Type | LiFePO₄ (lithium iron phosphate) |
Battery Capacity | 102.4 Wh |
Switchover Time | 0 ms (uninterrupted) |
Input | 48V 5A / 60V 3A DC Max |
Enclosure | Metal |
Certifications | CE, FCC, IEC62368, UN38.3 |
Differentiated Advantages of MU248
- Dual–voltage output design: Simultaneous 24V/3A and 48V/1A outputs eliminate the need for two separate backup units. This saves rack space, reduces cabling, and simplifies procurement.
- Metal enclosure:Provides better heat dissipation, electromagnetic shielding, and mechanical protection compared to plastic cases. Suitable for professional telecom environments.
- LiFePO₄ over lead–acid: More than 2,000 cycles at 80% DoD, wider temperature tolerance, and deeper discharge capability.
- True zero–transition: 0ms cutover ensures radios and routers do not reboot during mains failure.
- Plug–and–play: No programming, no configuration. Connect input, attach loads, and the unit starts backup automatically.
- OEM / Customization Capability:Mylion supports label customization, packaging adaptation, and connector type changes per project requirements. Volume orders can be tailored to specific operator standards.
Typical Use Cases for MU248 DC Mini UPS
Case A – 48V Wireless CPE & Outdoor Radio Backup
Remote bridges installed on towers, rooftops, or agricultural monitoring poles often lack a stable mains connection. The MU248 provides a dedicated 48V/1A output. For a 15W radio, backup exceeds 6 hours.
Case B – 24V Fiber Access Node (ISP FTTH)
Street cabinets with GPON ONUs or OLTs frequently experience brief power flickers. The 24V/3A output keeps the node online throughout outages. Typical 20W load → ~5 hours of runtime.
Case C – MixedVoltage Site (24V Router + 48V Radio)
Simultaneous operation of both outputs. Example: a 48V backhaul radio (25W) plus a 24V local router (15W). The MU248 protects both with a single unit, eliminating redundancy design complexity.
Case D – Professional Communication Systems (Non-Standard Voltage Continuity)
Railway signaling, emergency radio backbones, and SCADA links require strict 24V/48V stability. The MU248 delivers 0ms switchover, independent regulation, and rugged LiFePO₄ reliability for wayside cabinets.
How to Select the Right DC UPS Capacity for Your Telecom Node
Three-Step Sizing Method
- List equipment – Identify all 24V and 48V loads requiring backup, with their steady-state power (Watts).
- Define backup time– Specify required runtime (hours).
- Calculate energy – Total Wh = (Power_24V × hours) + (Power_48V × hours). Select a UPS with ≥ that capacity.
Selection Examples for MU248 DC Mini UPS(102.4 Wh)
Scenario | Load | Target Runtime | Required Energy | MU248 Feasibility |
48V radio only | 15W | 6h | 90 Wh | Yes |
24V router only | 20W | 5h | 100 Wh | Yes (close to capacity) |
48V radio (12W) + 24V router (10W) | 22W | 4h | 88 Wh | Yes |
48V radio (30W) | 30W | 4h | 120 Wh | No.Exceeds capacity – use larger model |
Note: Real runtime depends on battery age, ambient temperature, and load profile. Always add 15-20% margin.
Pre-Deployment Checklist
- Confirm input voltage matches site DC bus (48V or 60V nominal).
- Verify connector types – Mylion can customize for your standard.
- Measure actual load power at peak traffic (not just label rating).
- Test backup transition under real conditions before mass deployment.
Why Choose Mylion for Your Telecom Backup Projects
- Specialized in lithium DC UPS – Mylion focuses on LiFePO₄-based backup solutions for industrial and telecom applications, not general consumer power banks.
- Real dual-voltage output – Many “dual-voltage” products require manual switching or separate ports that cannot be used simultaneously. MU248 delivers true concurrent 24V and 48V output.
- Certified reliability – CE, FCC, IEC62368 (safety), and UN38.3 (transport) certifications ensure compliance for global deployment.
- Project-friendly customization – OEM orders accept label, packaging, cable, and connector modifications. Short lead times for medium to large volumes.
- Field-proven in harsh environments – Metal housing and LiFePO₄ chemistry allow operation from -20°C to +60°C (charging temperature limits apply). Used by ISPs in Southeast Asia, Africa, and Latin America.
- Direct technical support – Engineering team available to review your load profile and recommend the exact configuration.
FAQ
Q1: Can the MU248 charge from a solar panel?
Q2: What happens if I connect a 48V device to the 24V output?
Q3: Can I use both outputs at maximum current simultaneously?
Q4: How long does the internal LiFePO₄ battery last before replacement?
Q5: Is MU248 suitable for standard 12V broadband devices?
Q6: Do you offer samples before bulk order?
Conclusion
The Mylion MU248 DC UPS solves a specific, painful problem: providing seamless DC backup for telecom and wireless equipment that runs on 24V or 48V – often both at the same site.
With its dual independent outputs, LiFePO₄ chemistry, metal chassis, and zero-transition switching, it eliminates voltage mismatches, reduces equipment count, and lowers long-term operating costs.
For ISP and telecom projects requiring a compact, reliable, and project-ready DC UPS ,Choose MU248 for your 24V/48V telecom backup solution.
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