DC Backup Power Solutions for Telecom and ISP Customer Premises Equipment in 2026

Reliable backup power has become an important requirement for telecom operators, Internet Service Providers, broadband network companies, and system integrators. As fiber-to-the-home, fixed wireless access, and broadband services expand worldwide, customer premises equipment such as routers, ONTs, ONUs, modems, gateways, and CPE devices must remain powered during outages, voltage drops, and unstable grid conditions.

When subscriber-side equipment loses power, broadband service is interrupted even if the main network remains active. This can lead to device reboot, customer complaints, technical support workload, field maintenance costs, and customer churn. For ISPs and telecom operators, DC backup power is becoming a practical solution to improve last-mile network reliability and user experience.

What Is DC Backup Power for Customer Premises Equipment?

DC backup power is a backup power solution that provides direct DC output to low-voltage electronic devices during power interruptions. In telecom and ISP applications, it is commonly used for routers, ONTs, ONUs, modems, gateways, CPE devices, wireless terminals, CCTV devices, and small communication equipment.

Unlike traditional AC UPS systems, DC backup power solutions are usually more compact and efficient for low-voltage network devices. Most customer premises equipment already operates on DC power, so a Mini DC UPS or Telecom BBU can provide backup power directly to the device without unnecessary AC-to-DC conversion.

For subscriber-side broadband applications, DC backup power solutions are often used for:

Router backup power

ONT and ONU backup power

Gateway backup battery

CPE backup power

FTTH terminal backup

Wireless CPE backup

Modem backup power

Small communication terminal backup

CCTV and security device backup

Why Telecom Operators and ISPs Need DC Backup Power

Power instability is one of the most common reasons for service interruption at the customer premises level. Even a short power interruption can cause a router, ONT, or gateway to restart. After the device reboots, users may experience internet disconnection, VoIP interruption, Wi-Fi downtime, or service instability.

For telecom operators and ISPs, these small power-related interruptions can create major operational costs. Customers may complain about poor network quality, technical teams may need to troubleshoot avoidable issues, and field service teams may be dispatched unnecessarily.

A suitable DC backup power solution helps keep the last-mile connection active during local power interruptions. This is especially valuable in regions with unstable power grids, frequent outages, voltage fluctuations, remote installations, or critical communication needs.

DC Backup Power vs. Traditional AC UPS

Traditional AC UPS systems are widely used for computers, servers, and office equipment. However, they are often not the best choice for mass deployment with routers, ONTs, gateways, and CPE devices.

A traditional AC UPS converts battery power into AC output, and then the device adapter converts AC back into DC power. This creates extra conversion loss, larger product size, higher cost, and more installation complexity.

A DC backup power solution provides DC output directly to the network device. This makes it more suitable for telecom and ISP customer premises applications.

Compared with traditional AC UPS systems, DC backup power solutions can offer:

Smaller product size

Better installation flexibility

Lower conversion loss

Direct compatibility with DC-powered equipment

Lower deployment cost for subscriber-side applications

Easier installation for routers, ONTs, gateways, and CPE devices

Flexible voltage and connector options

Key Requirements for Telecom and ISP DC Backup Power Projects

Choosing a DC backup power solution should not be based only on battery capacity or price. For telecom and ISP projects, the backup power product must match the real application.

Important selection factors include:

Device operating voltage

Real working current

Startup surge current

Connector type

Connector polarity

Required backup time

Battery capacity

Battery chemistry

BMS protection design

Installation space

Safety margin

Certification requirements

Lithium battery transport documents

OEM and ODM customization needs

Mass production consistency

Long-term supply reliability

One common mistake is selecting a Mini UPS only according to the adapter label. The adapter rating does not always represent the actual working current of the router, ONT, gateway, or CPE device. Some devices may also require higher startup current. A professional DC backup power supplier should help evaluate the real working current and provide enough safety margin.

Common Applications of DC Backup Power in Telecom and ISP Networks

DC backup power solutions are used in many broadband and telecom applications.

FTTH and Fiber Broadband

In FTTH networks, ONTs and routers are critical devices at the customer premises level. If they lose power, the user loses broadband connectivity. A compact Mini DC UPS can help maintain service during short or medium power interruptions.

Home Gateway Backup

Modern gateways may require higher output current than simple routers. For these applications, a high-power Telecom BBU or higher-current Mini DC UPS may be required.

Wireless CPE Backup

Wireless CPE devices are often installed in homes, offices, rural areas, or remote sites. DC backup power can help keep wireless broadband equipment running during unstable power conditions.

Business Broadband Backup

Small businesses may depend on broadband connectivity for payment systems, communication, security cameras, and cloud applications. A reliable DC backup power solution can reduce downtime caused by local power problems.

Security and CCTV Systems

Many CCTV cameras, routers, and network video devices use DC power. Mini DC UPS products can support backup power for small security systems and remote monitoring equipment.

How MYLION Supports DC Backup Power Projects

Shanghai Mylion Technology Co., Ltd., operating under the MYLION brand, provides Mini DC UPS, Telecom BBU, and DC backup power solutions for international B2B customers.

With over 13 years of experience in lithium battery pack development and customized backup power solutions, MYLION supports telecom operators, Internet Service Providers, broadband network companies, system integrators, network equipment distributors, and OEM/ODM customers across Europe, North America, Latin America, Africa, the Middle East, Asia, and other global markets.

MYLION focuses on compact DC backup power systems for routers, ONTs, ONUs, modems, gateways, CPE devices, FTTH equipment, wireless CPE, CCTV systems, and small communication terminals.

MYLION’s DC backup power product categories include:

12V Mini DC UPS for routers, ONTs, modems, and gateways

High-power 12V Telecom BBU for advanced gateways and higher-current CPE devices

Inline FTTH Mini UPS for space-constrained fiber broadband installations

USB-C PD Mini UPS for modern USB-C powered devices

24V and 48V DC backup power solutions for professional communication equipment

LiFePO4 Mini UPS solutions for enhanced safety, longer cycle life, and stable standby performance

Popular MYLION models include MU68, MU26, MU48, MU35, MU65, MUJ46, MUC85, MU248, and ML1202AC. These models support different voltage, current, capacity, connector, runtime, and installation requirements.

MYLION’s key value is application-based model selection. Instead of only supplying generic backup power products, MYLION helps customers confirm real device requirements before recommending a suitable DC backup power solution.

The MYLION team supports customers in checking:

Operating voltage

Real working current

Startup surge

Connector type

Polarity

Required backup time

Installation environment

Safety margin

Certification requirements

This approach helps reduce common project risks such as wrong voltage selection, insufficient output current, connector mismatch, unstable device operation, short backup time, and mass deployment failure.

OEM and ODM DC Backup Power Support

For B2B customers, MYLION provides OEM and ODM support for Mini DC UPS, Telecom BBU, and compact DC backup power projects.

Available customization support includes:

Private label service

Customized packaging

Connector and cable customization

Capacity adjustment

Product color and appearance customization where feasible

Manual and label customization

Project-based documentation

Sample testing support

Certification coordination

Mass production support

For brand customers, telecom projects, ISP deployments, and system integrator solutions, customization is often necessary because device voltage, connector type, runtime target, and installation method can vary significantly from project to project.

Battery Safety and Quality Control

MYLION DC backup power products are designed with lithium-ion or LiFePO4 battery technology and BMS protection. Protection functions may include overcharge protection, over-discharge protection, overcurrent protection, and short circuit protection, depending on the product model and configuration.

The company applies quality control processes including incoming material inspection, production process control, functional testing, aging or charge-discharge verification when required, and 100% outgoing inspection before shipment.

For international B2B projects, MYLION can support documentation such as CE, FCC, RoHS, UN38.3, MSDS, product specifications, user manuals, labeling files, lithium battery transport documents, and IEC 62368-related evaluation when required. Certification availability depends on the final product model and configuration.

FAQ

What is a DC backup power solution?

A DC backup power solution provides direct DC output to electronic devices during power interruptions. It is commonly used for routers, ONTs, gateways, CPE devices, telecom equipment, CCTV systems, and small communication terminals.

Why is DC backup power important for telecom and ISP customer premises equipment?

It helps keep routers, ONTs, gateways, and CPE devices running during outages or voltage drops. This reduces service interruption, device reboot issues, customer complaints, and support workload.

What is the difference between DC backup power and AC UPS?

An AC UPS provides AC output, while a DC backup power solution provides DC output directly to DC-powered equipment. For routers, ONTs, modems, gateways, and CPE devices, DC backup power is usually more compact, efficient, and easier to install.

What is a Mini DC UPS?

A Mini DC UPS is a compact DC backup power device designed for low-voltage equipment such as routers, ONTs, modems, gateways, cameras, and CPE devices.

What is a Telecom BBU?

A Telecom BBU, or Battery Backup Unit, is a backup power system designed for telecom and broadband equipment. It can be used for customer premises equipment, access devices, communication terminals, and selected telecom infrastructure applications.

Can one DC backup power product work with all routers and ONTs?

No. Different devices may require different voltage, current, connector, polarity, and backup time. The right model should be selected based on the actual device specifications.

Why is real working current important?

The adapter label does not always show the real working current of the device. Some routers and gateways may also require higher startup current. Checking real working current helps avoid insufficient output current and unstable operation.

Can MYLION provide private label DC backup power products?

Yes. MYLION supports private label, OEM, and ODM Mini DC UPS and Telecom BBU projects, including connector customization, cable customization, packaging customization, manuals, labels, and project documentation.

Which customers are suitable for MYLION DC backup power solutions?

MYLION DC backup power solutions are suitable for telecom operators, Internet Service Providers, broadband network companies, FTTH operators, system integrators, network equipment distributors, OEM/ODM customers, brand customers, and professional equipment companies.

Conclusion

DC backup power solutions are becoming increasingly important for telecom and ISP customer premises equipment. As broadband networks expand and users expect stable connectivity, routers, ONTs, gateways, and CPE devices need reliable backup power during outages, voltage drops, and unstable grid conditions.

For customer premises applications, compact DC backup power is often more practical than traditional AC UPS systems. It provides direct DC output, smaller size, easier installation, and better compatibility with low-voltage network devices.

Shanghai Mylion Technology Co., Ltd. provides professional Mini DC UPS, Telecom BBU, and DC backup power solutions for telecom operators, ISPs, broadband network companies, system integrators, distributors, and OEM/ODM customers.

By combining lithium battery engineering, application-based model selection, connector customization, private label support, certification documentation, quality inspection, and project-based service, MYLION helps global B2B customers build reliable DC backup power solutions for modern broadband and telecom customer premises equipment.

http://www.myliontech.com
Shanghai Mylion New Energy Co.,Ltd.