Why your router needs its own backup
When the power goes out in Bangladesh, your laptop and phone keep working, but the internet dies instantly. That is because your router and ONU run on mains electricity. A mini UPS sits between the wall socket and your router, charges itself while power is on, and takes over the moment it goes out. There is no interruption, no reconnecting, no dropped video call.
A mini UPS is not the same as a computer UPS. It is small, silent, has no fan, and outputs DC power at 5V, 9V and 12V, which is exactly what routers, ONUs and ePON devices need. Most units are about the size of a paperback book.
How many hours of backup will you actually get?
This is where most buyers get confused. A 10000mAh mini UPS does not mean ten hours. The real backup time depends on how much power your devices draw.
- Router only (around 6W): a 10400mAh unit typically gives roughly 5 to 7 hours.
- Router plus ONU (around 10W): the same unit gives roughly 3 to 4 hours.
- Router plus ONU plus a switch: expect 2 to 3 hours.
So if your area has two or three hours of load-shedding at a stretch, a 10400mAh unit is enough. If outages run longer, or you run several devices, step up to 20000mAh.
What to check before you buy
- Output voltage must match your router. Look at the adapter that came with your router. Most are 12V, some are 9V or 5V. A good mini UPS supports all three and lets you switch.
- Check the port size. The common DC barrel size is 5.5 x 2.5mm. Most mini UPS units ship with several tips, but confirm before ordering.
- PoE support, if you have an IP camera. Some models output 15V or 24V PoE so your CCTV camera stays online too.
- Pass-through charging. The unit should power your router while charging itself, not one or the other.
- Battery type. Lithium cells last longer and run cooler than older battery types, which matters in Bangladesh heat.
Mini UPS options available at SoundLoom
These are the units we currently stock, from entry level to heavy duty.
WGP Optima 302 — 10500mAh
A straightforward 10500mAh unit for a single router. Good choice if you only need to keep WiFi alive for a few hours and want to spend the least. Note that it comes without an adapter. See the WGP Optima 302.
JIMOX JM-01 — 10400mAh, multi-output
Multiple outputs, so it runs a router and an ONU together, with fast charging so it refills quickly between outages. A sensible default for most homes. See the JIMOX JM-01.
SKE POE 432P — 10400mAh, 25W with PoE
Same battery size but 25W output and PoE support at 15V and 24V. This is the one to pick if you also have an IP camera that needs to stay online. See the SKE POE 432P.
OLAX POE D8 Pro — 20000mAh, 24W
Double the capacity. For long outages, or when you are running a router, an ONU and a switch together. See the OLAX POE D8 Pro.
Common questions
Will a mini UPS work with any router?
Almost always, as long as the voltage matches. Check the label on your router's adapter for the output voltage, then make sure the mini UPS supports it.
Does it switch over instantly?
Yes. A proper mini UPS has no switching gap, so your connection does not drop and devices do not reboot.
Can I charge my phone from it?
Most units have a USB output, so yes, though doing that will cut into your router backup time.
How long does the battery last?
A lithium mini UPS generally holds up for two to three years of daily cycling. Keeping it out of direct sun and away from heat helps.
Is it safe to leave it plugged in all the time?
Yes, that is how it is meant to be used. It stays on charge and only discharges when mains power fails.
Which one should you get?
If you only have a router and outages are short, the WGP Optima 302 or JIMOX JM-01 will do. If you have an ONU as well, go with the JIMOX. If there is an IP camera in the mix, take the SKE POE 432P. For long outages or several devices, the OLAX POE D8 Pro at 20000mAh is the safer buy.
All units come with cash on delivery across Bangladesh and 7 days replacement. Browse all mini UPS and backup power options.