WGP Optima 302 10500mAh Mini UPS: Keep Your Internet Alive When the Power Drops

The power cuts out, and just like that your router is dead, your ONU goes dark, and the video call freezes. If you work from home or run a small office in Bangladesh, this happens more often than anyone would like, and usually with no warning.

The WGP Optima 302 10500mAh Mini UPS is built to end that headache. It keeps your router and ONU running for hours through load-shedding, and it switches to battery so fast that nothing reboots and no connection drops. Small, quiet, and simple to set up, it is one of the most practical tech upgrades for a Bangladeshi home or office.

Here is the full rundown before you buy.

What Is the WGP Optima 302 10500mAh Mini UPS?

The WGP Optima 302 is a compact DC backup power unit from WGP (Wonderful Group Power), a Shenzhen-based maker of lithium backup power products. It is not the same thing as a traditional AC UPS built for desktop computers. It is a DC-output device made specifically for low-power network gear: Wi-Fi routers, ONU/ONT fiber terminals, IP cameras, and other devices that run on 9V or 12V DC.

At its core is a 10500mAh battery. When mains power is present, the unit charges itself automatically. When the power fails, it switches over to battery instantly, so your router keeps humming and your connection stays live. In an environment where load-shedding is a regular part of the day, that seamless switchover is the feature that actually matters.

It also comes with a 1-year warranty, which is worth noting since many mini UPS units in this price range ship with none.

Key Specs at a Glance

The standout numbers here are the 27W max output and the dual 12V/2A DC outputs. That extra output headroom means the Optima 302 can comfortably run heavier setups than smaller mini UPS units, like a router plus an ONU plus a camera, without straining.

What Devices Can It Power?

Anything that runs on 9V or 12V DC within the output rating, plus USB devices through the QC 3.0 port. That covers most of what keeps a home or small office connected.

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

In a small office: IP cameras and small CCTV setups; low-draw network switches; and other 12V networking gear.

With two 12V/2A outputs and a 9V/1A output, you can run a router and an ONU together and still have a port free for a camera or a second device. No splitter required.

The QC 3.0 Port Is a Real Bonus

Most mini UPS units give you a basic 5V USB port. The Optima 302 includes USB Quick Charge 3.0, so the same unit that keeps your Wi-Fi online can also fast-charge your phone during an outage. When the power is out for hours, keeping your phone topped up matters as much as keeping the internet on.

WGP Optima 302 vs a Traditional AC UPS

For years, homes and offices here relied on traditional AC UPS units (500VA and up) to keep desktops and network gear running. The Optima 302 is a different kind of product with different trade-offs.

If your goal is keeping the internet and network alive through load-shedding, and you do not need to run a desktop off it, the Optima 302 wins on runtime, weight, and silence. If you need to keep a full computer powered, a traditional AC UPS is still the right choice.

How to Set It Up

Setup takes only a few minutes and needs no tools.

1. Connect the input. Plug the 12V/3A input adapter into the Optima 302’s input port, then connect it to your mains socket.
2. Connect your devices. Plug your router into one 12V/2A output. Connect your ONU/ONT to the second 12V/2A output, or to the 9V/1A output if that matches your ONU’s rated voltage. Use the USB QC 3.0 port for phone charging or other USB devices.
3. Check the LED. The battery indicator shows charge status so you can see your power level at a glance.
4. Test the switchover. With everything running, briefly unplug the mains to confirm your router and ONU stay on without a reboot.

Once connected, it charges on its own whenever the mains is on. There is no switch to flip when the power goes out.

Frequently Asked Questions

Will my router reboot during a power cut? No. The Optima 302 switches to battery instantly, so your router, ONU, and connected devices stay powered and never reboot. Your internet connection holds through the transition.

Can it run a router and an ONU at the same time? Yes. With two 12V/2A outputs and a 9V/1A output, plus a 27W total ceiling, it comfortably powers a router and ONU together, with room for an extra device on the spare port.

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

Can it fast-charge my phone? Yes. The USB QC 3.0 port supports Quick Charge, so you can fast-charge a compatible phone while the unit also keeps your Wi-Fi online. Charging a phone will shorten total backup time a little.

Does it come with a warranty? Yes, the WGP Optima 302 comes with a 1-year warranty.

How do I know how much battery is left? The built-in LED indicator shows real-time charge status, so you always know your power level.

The Bottom Line

If you are tired of losing internet every time the power drops, the WGP Optima 302 10500mAh Mini UPS is an easy fix. You get hours of backup for your router and ONU, instant switchover with no reboots, a generous 27W output with dual 12V/2A ports, and a QC 3.0 port to fast-charge your phone, all in a unit that weighs under 300 grams and backs it up with a 1-year warranty.

For anyone working from home or running a small office in Bangladesh, that is reliable protection for a lot less than the cost of an interrupted workday.

You can find the WGP Optima 302 and other backup power options at Marshmallow Tech. If you want help matching the right unit to your router, ONU, or CCTV setup, reach out to our team and we will recommend the right configuration.