{"id":18961,"date":"2026-05-08T13:34:16","date_gmt":"2026-05-08T05:34:16","guid":{"rendered":"https:\/\/myliontech.com\/?p=18961"},"modified":"2026-05-09T14:30:25","modified_gmt":"2026-05-09T06:30:25","slug":"mini-ups-for-ont-router-vs-oversized-battery","status":"publish","type":"post","link":"https:\/\/myliontech.com\/en\/mini-ups-for-ont-router-vs-oversized-battery\/","title":{"rendered":"Is Bigger Battery Always Better for Router and ONT Backup?"},"content":{"rendered":"\t\t
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Telecom companies and ISPs often default to large backup batteries for customer-premise ONTs, routers, and outdoor network nodes. The logic seems sound: longer runtime prevents customer churn during extended outages. But for a typical last-mile deployment, oversized batteries create more problems than they solve \u2013 higher CAPEX, bulky enclosures, safety risks, and unnecessary battery swaps every few years.<\/p>

For ISPs, the real goal is reliable, just<\/b><\/u><\/strong>–<\/b><\/u><\/strong>enough backup<\/b><\/u><\/strong><\/a>\u00a0at the lowest total cost of ownership (TCO) across thousands of sites. The Mylion<\/b><\/u><\/strong>\u00a0Mini <\/b><\/u><\/strong>DC UPS<\/b><\/u><\/strong>\u00a0solutions<\/b><\/u><\/strong><\/a>\u00a0can achieve this function without the need for large batteries, thus avoiding the increase in related costs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Understanding ONT & CPE Power Draw \u2013 Why Capacity Guessing Fails<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A standard ONT consumes 5\u201310W, while a Wi\u2011Fi 6 router typically uses 10\u201315W. Most customer setups draw 8\u201312W total. Outdoor CPEs (LTE\/5G) run slightly higher at 10\u201315W. Raw mAh ratings mean nothing without voltage.<\/p>

Real runtime formula:<\/p>

Wh = mAh \u00d7 Voltage \/ 1000 \u2192 then Wh \u00f7 load watts \u00d7 0.9 (efficiency)<\/b><\/strong><\/p>

Example: A \u201c20,000 mAh\u201d power bank (3.7V) provides ~74 Wh. For a 10W ONT+router, that\u2019s roughly 6.6 hours of runtime. But ISP outage data shows that 95% of grid interruptions last under 2 hours. A 24-hour backup is overkill for typical B2B edge sites.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Three Risks ISPs Face with Oversized Batteries<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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1. Safety & Compliance Across Thousands of Units<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Large lithium batteries generate more heat and require stricter certifications (UL, IEC 62133, UN38.3<\/b><\/strong>). When ISPs deploy tens of thousands of units, a single thermal event in a customer\u2019s home or an outdoor cabinet becomes a reputation and liability disaster.<\/p>

Mylion Mini UPS<\/b><\/strong>\u00a0integrates intelligent BMS (over-voltage, over-current, short-circuit, temperature protection) and flame-retardant ABS \u2013 certified for global ISP use.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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2. TCO Spiral \u2013 Purchase, Logistics, Replacement<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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For an ISP managing 50,000 <\/b><\/strong>customer sites, every extra 5 in battery cost adds 250,000 to CAPEX. Oversized batteries are heavier and larger, increasing shipping costs and warehouse space. They also need replacement every 3\u20135 <\/b><\/strong><\/p>

A properly sized Mylion Mini UPS<\/b><\/strong>\u00a0(e.g., MU<\/b><\/u><\/strong>4<\/b><\/u><\/strong>8 Mini UPS with <\/b><\/u><\/strong>29.6<\/b><\/u><\/strong>Wh<\/b><\/u><\/strong><\/a>) cuts upfront cost by 30\u201350% compared to generic large batteries, while still covering 90% of outages.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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3. Deployment Constraints in Outdoor & Indoor Enclosures<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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ISP field engineers must fit batteries into existing demarcation boxes, outdoor OLT cabinets, and small wall-mount enclosures. Oversized batteries simply won\u2019t fit.<\/p>

Mylion\u2019s ultra-compact designs \u2013 MU68 <\/b><\/u><\/strong>Mini UPS<\/b><\/u><\/strong><\/a>\u00a0<\/b><\/strong>at 112\u00d770\u00d760 mm or the ML1202 LiFePO\u2084 <\/b><\/u><\/strong>Mini UPS<\/b><\/u><\/strong><\/a>\u00a0series \u2013 slide into tight spaces, enabling consistent deployment without cabinet retrofits.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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The Right-Sized Solution \u2013 Mylion Mini UPS for ISP Edge Backup<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Traditional UPS units are overkill for ONTs and routers. They convert AC to DC to charge, then DC back to AC, then the CPE converts to DC again \u2013 losing 20\u201330% efficiency. Mylion Mini DC UPS<\/b><\/strong>\u00a0delivers direct DC output (5V\/9V\/12V\/24V\/48V<\/b><\/strong>) with >90% efficiency and\u00a00-ms switchover\u00a0\u2013 the ONT never reboots, so customers stay online seamlessly.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Mylion\u2019s product line is built for real ISP workloads:<\/p>

Mini UPS <\/b><\/strong>Series<\/b><\/strong><\/p><\/td>

Current<\/b><\/strong><\/p><\/td>

Best for ISP Use Cases<\/b><\/strong><\/p><\/td><\/tr>

MU26 \/ MU48<\/b><\/strong><\/p><\/td>

3A<\/p><\/td>

Basic ONT+router at customer premises (indoor)<\/p><\/td><\/tr>

MU68<\/b><\/strong><\/p><\/td>

3A (68Wh)<\/p><\/td>

High-reliability home or small business; 9+ hours on low-power ONT<\/p><\/td><\/tr>

MU35 \/ MU<\/b><\/strong>6<\/b><\/strong>5<\/b><\/strong><\/p><\/td>

5A<\/p><\/td>

Multi-device (ONT + router + IP camera)<\/p><\/td><\/tr>

MUC85<\/b><\/strong><\/p><\/td>

USB-C PD 65W<\/p><\/td>

Modern USB-C powered CPE \/ 5G routers<\/p><\/td><\/tr>

ML1202AC<\/b><\/strong><\/p><\/td>

2A LiFePO\u2084<\/p><\/td>

Long-life deployments (>2000 cycles) for frequently cycled sites<\/p><\/td><\/tr>

MA825<\/b><\/strong><\/p><\/td>

Waterproof<\/p><\/td>

Outdoor cabinets, rural FTTH nodes, pedestals<\/p><\/td><\/tr>

MU248<\/b><\/strong><\/p><\/td>

24V\/3A + 48V\/1A<\/p><\/td>

Telecom base station backhaul, street cabinets<\/p><\/td><\/tr>

MUL268<\/b><\/strong><\/p><\/td>

Solar-ready<\/p><\/td>

Off-grid or remote outdoor sites with solar input<\/p><\/td><\/tr><\/tbody><\/table>

Every model includes: 0-ms auto switch, multi-voltage output, smart BMS, flame-retardant ABS, and high-temperature operation (45\u201350\u00b0C). OEM\/ODM support is available for ISPs needing custom connectors, branding, or specific capacity.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Operational Strategies for ISPs Using Mylion Mini UPS<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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