WGP Mini UPS 10,400mAh: The Cheapest Way to Keep Your Internet On During Load-Shedding

Load-shedding hits, and within seconds your router dies, your ONU goes dark, and that Zoom call you were on drops. If you work from home, run a small office, or just hate losing Wi-Fi mid-download, you already know the frustration.

The WGP Mini UPS 10,400mAh fixes exactly this problem. It gives your router and ONU 7 to 10 hours of backup power, and the switchover happens instantly, so nothing reboots and no connection drops. At a budget-friendly price for the Bangladesh market, it is one of the easiest tech upgrades you can make for your home or office.

Here is everything you need to know before you buy one.

What Is the WGP Mini UPS 10,400mAh?

The WGP Mini UPS (model WGP103-01) is a compact DC backup power unit made by WGP (Wonderful Group Power), a Shenzhen-based maker of lithium backup power products. It is not a traditional AC UPS built for computers. Instead, it is a DC-output device built specifically for low-power network gear: routers, ONU/ONT fiber terminals, IP cameras, CCTV systems, VoIP phones, and anything else that runs on 5V, 9V, or 12V DC.

Inside is a 10,400mAh lithium-ion battery (38.48Wh, built from 18650 cells) rated for around 500 full charge cycles. When mains power is on, it charges itself automatically. When the power cuts out, it switches to battery in zero milliseconds. Your router does not blink. Your call does not drop. Your download keeps going.

In a country where load-shedding is a normal part of the day and rarely announced in advance, that instant switchover is the whole point. It is the difference between a smooth workday and constantly waiting for your connection to come back.

How Long Does It Last During Load-Shedding?

Most router-and-ONU setups get 7 to 10 hours of backup. The exact runtime depends on how much power your connected devices pull. Here is what you can realistically expect for common Bangladesh home and office setups:

These numbers assume your devices run at their rated wattage. Real results can vary by about 15% depending on device age, temperature, and battery health. Since most load-shedding in Dhaka runs somewhere between 30 minutes and 4 hours, the WGP Mini UPS covers a full outage at heavy load easily, and stretches to overnight coverage when the load is light.

Charging back up from empty takes 5 to 7 hours through the 12V/2A input.

What Devices Can It Power?

Anything that runs on 5V, 9V, or 12V DC within the rated output amperage. That covers a lot.

At home: Wi-Fi routers from TP-Link, Tenda, and Ruijie; fiber ONU/ONT terminals from BTCL, Link3, Amber IT, and Carnival; single-channel CCTV cameras; smart home hubs; and phone charging through the USB 5V port.

In a small office: IP cameras and small CCTV setups; VoIP phones (most run on 12V DC); low-draw network switches; alarm systems; POS terminals; and digital signage controllers.

For telephony and PABX: Small PABX adapters and gateway units that run on 12V DC work fine. If your office uses a Panasonic, TCS, IKE, or Miracall PABX system, the WGP Mini UPS can keep the PABX power adapter alive during an outage, so your internal extensions stay up even when the mains power is gone.

The best part is the simultaneous multi-output. With USB 5V, DC 9V, and DC 12V all available at once, you can back up a router, an ONU, and an IP camera from a single unit. No splitter needed.

WGP Mini UPS 10,400mAh Full Specifications

For VoIP Phones and PABX Offices

If your office runs a PABX telephone system, which most Bangladeshi businesses on Panasonic KX-TDA, TCS, IKE, or Miracall setups do, keeping the PABX adapter and its VoIP gateways powered during load-shedding matters a lot. A power cut that kills the PABX takes down every internal extension at once, and that stops your operations cold.

The WGP Mini UPS covers this gap for small and mid-size offices. Most PABX power adapters draw 12V DC at 1-2A, which sits within the WGP Mini UPS’s 12V/1A output for light loads. For a single PABX power supply unit pulling under 10W, expect 6 to 9 hours of backup. VoIP desk phones that use external 5V or 12V adapters can stay live the same way, so you keep taking and making calls through the outage.

One note: if your office runs a PABX with multiple expansion cards, a rack-mount UPS is a better fit for that higher power draw.

WGP Mini UPS vs Traditional AC UPS: Which One Do You Actually Need?

For years, offices and homes here leaned on traditional AC UPS units (500VA to 1500VA) to keep desktops and network gear running. The WGP Mini UPS is a different kind of product with different trade-offs.

If your main goal is keeping the internet and your network alive through load-shedding, and you do not need to run a desktop or AC appliance off it, the WGP Mini UPS wins on backup time, weight, noise, and switchover speed. If you need to keep a full computer running, a traditional AC UPS is still the right tool.

How to Set It Up (Under 5 Minutes, No Tools)

1. Connect the input. Plug the 12V/2A DC input cable (5.5×2.1mm barrel jack) into the WGP Mini UPS input port, then connect that to your mains socket.
2. Connect your devices. Plug your router adapter into the 12V DC output. Connect your ONU/ONT adapter to the 9V DC output (or 12V, whichever your ONU is rated for). Use the USB 5V port for anything USB-powered.
3. Power on. Single-click the power button. The LED shows charge status.
4. Test it. Confirm your router and ONU are running off the WGP Mini UPS, then briefly unplug the mains to check the zero-transfer switchover for yourself.
5. Shut down. Double-click the power button to turn it off when you do not need it.

Once it is connected, it charges on its own whenever the mains is on. You never have to flip a switch during an outage.

Frequently Asked Questions

How long does it last for a router and ONU during load-shedding? For a typical router and ONU pulling 15-20W together, expect about 7-9 hours. Router-only setups get 9-11 hours. Your actual runtime depends on device power draw.

Can it power CCTV cameras? Yes. The 12V DC output works with most IP and analog CCTV camera adapters. You can back up a router, ONU, and a single IP camera at once. For bigger CCTV arrays with NVRs, runtime drops to 4-6 hours depending on total wattage.

Is it compatible with VoIP phones and PABX systems? It works with VoIP desk phones and PABX power adapters that run on 5V or 12V DC. Most single-port PABX gateway adapters fit within its output rating. For multi-card PABX systems with heavier draw, use a dedicated rack UPS.

Does it work with all ISP ONUs in Bangladesh? It is compatible with ONUs from BTCL, Link3, Amber IT, Carnival, and other major ISPs, since these usually run on 12V DC. Check your ONU’s rated voltage and current before connecting.

During a power cut, does my router reboot? No. The zero transfer time switchover means your router, ONU, and other connected devices never lose power and never reboot. Your internet stays live through the whole transition.

How long does it take to fully charge? Around 5 to 7 hours from empty through the 12V/2A input. It charges automatically whenever it is connected to mains power.

How many charge cycles does the battery support? The 18650 lithium-ion cells are rated for about 500 full cycles. With one full cycle a day during heavy load-shedding, that is roughly 1.5 years of daily full-discharge use. Under more typical conditions (partial discharge, a few cycles a week), the battery lasts 3 to 5 years.

Can I charge my phone with it? Yes. The USB 5V/1-2A output can charge a phone while also powering your router and ONU. Charging a phone will shorten total backup time a little.

The Bottom Line

For anyone in Bangladesh tired of losing internet every time the power goes, the WGP Mini UPS 10,400mAh is one of the most practical purchases you can make. You get 7 to 10 hours of backup for a router and ONU, instant switchover with no reboots, and multiple DC outputs from one small unit that fits in your palm.

Whether you work from home, run a small office, or need to keep a PABX and VoIP setup online, it delivers reliable protection for far less than the cost of a single hour of lost work.

You can browse the WGP Mini UPS and other backup power options at Marshmallow Tech. If you want help matching the right unit to your specific router, ONU, CCTV, or PABX setup, reach out to our team and we will point you to the right configuration.