Olax POE-D8 PRO 20000mAh Mini UPS: Big-Battery Backup With POE Support

When the power goes, your router dies, your CCTV blinks off, and if you run POE cameras or access points, the whole setup goes dark at once. In Bangladesh, where load-shedding is a normal part of the day, that means lost work, dropped calls, and gaps in your security footage.

The Olax POE-D8 PRO 20000mAh Mini UPS is built for exactly this. It packs a large 20000mAh battery, supports a wide range of output voltages, and, unlike most mini UPS units, it can power POE devices at 15V or 24V. If your setup goes beyond a simple router and ONU, this is the mini UPS worth looking at.

Here is the full breakdown before you buy.

What Is the Olax POE-D8 PRO 20000mAh Mini UPS?

The Olax POE-D8 PRO is a compact DC mini UPS designed to keep low-power network gear running during outages. It is not a traditional AC UPS for desktop computers. It is a DC backup unit made for routers, modems, ONTs, network switches, and IP cameras, including POE-powered devices.

The unit runs on standard AC mains input (100-240V) and holds a 20000mAh battery. When the power is on, it charges automatically. When the power cuts, it keeps your connected devices running without you having to do anything. For homes, offices, and remote areas where the grid is unreliable, that steady performance is the whole point.

The thing that sets it apart from smaller mini UPS units is POE support. Most mini UPS models top out at 12V, which covers routers and ONUs but leaves POE cameras and access points unpowered. The POE-D8 PRO handles those too.

Key Specs at a GlanceRemove product image

What Devices Can It Power?

The multi-voltage output is where this unit earns its place. With 5V, 9V, 12V, 15V, and 24V on tap, it covers far more than a basic router backup.

At home: Wi-Fi routers and modems, fiber ONT terminals from BTCL, Link3, Amber IT, and Carnival, single IP cameras, and phone charging through the USB port.

In an office: Office network gear, CCTV systems, network switches, and POE devices like IP cameras and access points running at 15V or 24V.

For POE setups specifically: This is the reason to choose the D8 PRO over a cheaper unit. If your cameras or access points draw power over the ethernet cable, the selectable 15V/24V POE output (up to 15W) keeps them alive through an outage. A standard 12V mini UPS simply cannot do that.

The combined output tops out at 24W, so you can run a few devices at once, though heavier POE loads will use up that budget faster than a light router-only setup.

Why the POE Support Actually Matters

Most mini UPS buyers start with one goal: keep the router on. But plenty of homes and small offices in Bangladesh have grown past that. POE cameras, a mesh access point in the next room, a small network switch, these are common now, and a 12V-only mini UPS leaves them exposed.

The Olax POE-D8 PRO covers the whole chain. During a power cut, your router stays up, your ONT stays up, and your POE cameras keep recording. For a security setup, that continuous footage is often the entire reason you installed cameras in the first place. A backup that drops your cameras the moment the power goes is not much of a backup.

Olax POE-D8 PRO vs a Traditional AC UPS

Homes and offices here have long used traditional AC UPS units (500VA and up) for desktops and network gear. The POE-D8 PRO is a different product with different strengths.

If your goal is keeping your internet, cameras, and POE devices alive through load-shedding, the POE-D8 PRO does things a traditional UPS cannot. If you need to keep a full desktop running, a traditional AC UPS is still the right tool.

What’s in the Box

• 1x Olax POE-D8 PRO
• 1x AC power cable
• 1x “Y” cable for DC output
• 1x user manual

The included Y cable lets you split the DC output to run more than one device from a single port, which is handy for a router-and-ONU pair.

How to Set It Up

1. Connect the input. Plug the AC power cable into the POE-D8 PRO and into your mains socket.
2. Connect your devices. Match each device to the right voltage output: 12V or 9V for your router and ONT, 15V or 24V for POE devices, and the USB port for phone charging. Use the Y cable if you need to run two devices off one output.
3. Select the POE voltage. For POE devices, set the selectable output to 15V or 24V to match what your camera or access point needs. Check the device rating first.
4. Watch the LED indicators. They show real-time power status so you can monitor charge and output at a glance.
5. Test the switchover. With everything running, briefly unplug the mains to confirm your devices stay on.

Once connected, it charges automatically whenever the mains is on.

Frequently Asked Questions

Can it power POE cameras and access points? Yes. The selectable 15V/24V POE output (up to 15W) is built for POE devices, which most standard mini UPS units cannot power. Check your device’s required voltage before selecting the output.

Will my router reboot during a power cut? No. The unit keeps your connected devices powered through the outage, so your router and ONT stay on and your internet holds.

What voltages does it output? 5V, 9V, 12V, 15V, and 24V, plus a 5V USB output, with a combined maximum of 24W across all ports.

Does it work with ISP ONTs in Bangladesh? It is compatible with ONTs from BTCL, Link3, Amber IT, Carnival, and other major ISPs, which typically run on 9V or 12V DC. Confirm your ONT’s rated voltage before connecting.

Can I charge my phone with it? Yes. The 5V USB output can charge a phone while the unit also powers your network gear. Charging a phone will use some of the total output budget.

How many devices can it run at once? That depends on their combined draw against the 24W total ceiling. A router and ONT together leave room for a light additional load; heavier POE devices will use the budget faster.

The Bottom Line

If your setup has grown past a simple router, the Olax POE-D8 PRO 20000mAh Mini UPS is the one to look at. The large 20000mAh battery gives you extended runtime, the multi-voltage output covers everything from a 5V phone to a 24V POE camera, and the POE support keeps devices online that a cheaper mini UPS would leave in the dark.

For homes and small offices in Bangladesh running cameras, access points, and network gear alongside the usual router and ONT, it is a backup solution that actually covers the whole setup.

You can find the Olax POE-D8 PRO and other backup power options at Marshmallow Tech. If you want help matching the right unit and voltage to your router, ONT, CCTV, or POE setup, reach out to our team and we will point you to the right configuration.