TL;DR
To keep your WiFi running during load shedding, you need a mini UPS (uninterruptible power supply) sized for your router. For most South African homes, a 12000mAh mini UPS keeps a fibre router and ONT online for 6-8 hours — enough for Stage 6. It costs far less than an inverter, needs no electrician, and switches over instantly so your connection never drops. Below: how to choose, what to avoid, and what size you need.
What keeps WiFi on during load shedding?
A mini UPS is a small battery box that sits between the wall socket and your router. When the power cuts, it switches over in milliseconds — your router and fibre ONT stay on, so your internet never drops. It is the cheapest, simplest way to stay online through load shedding.
What size mini UPS do I need?
Size is about battery capacity (mAh) versus how long you need to stay online:
| Capacity | Runtime (router + ONT) | Best for |
|---|---|---|
| 8000mAh | ~4-5 hours | One load shedding slot |
| 12000mAh | ~6-8 hours | Stage 6, most homes (recommended) |
| 18000mAh+ | ~10+ hours | Heavy users, multiple devices |
Mini UPS vs inverter vs power bank
| Option | Cost | Powers | Setup |
|---|---|---|---|
| Mini UPS | Low (from ~R600) | Router, ONT, cameras | Plug and play |
| Power bank | Low | Phones, tablets, laptops | Charge devices directly |
| Inverter + battery | High (R5,000+) | TV, fridge, lights | Needs setup / electrician |
What to look for in a mini UPS
- Correct output voltage: most SA fibre routers need 12V; good units offer 9V/12V/15V.
- Fast switchover: under 10ms so the router does not reboot.
- Enough capacity: 12000mAh for comfortable Stage 6 coverage.
- Local support: buy from an SA seller for warranty and help.
Do I need an electrician to install it?
No. A mini UPS is plug-and-play. You plug it into the wall, plug your router into the UPS, and it works. No wiring, no electrician.
Frequently Asked Questions
How long will a mini UPS keep my WiFi on?
A 12000mAh unit typically runs a fibre router and ONT for 6-8 hours, covering even Stage 6 schedules.
Will a mini UPS power my whole house?
No. It powers low-draw electronics like routers, ONTs, and cameras. For appliances you need an inverter or larger battery system.
Does the internet really stay on with no drop?
Yes. A good mini UPS switches over in milliseconds, so the router never restarts and your connection stays live.
Can it also run my security cameras?
Yes, many mini UPS units can power a router plus a couple of small CCTV cameras, depending on capacity.
What is the cheapest way to stay online during load shedding?
A mini UPS for your router is the cheapest reliable option — far less than an inverter, and it targets exactly what you need: internet.
Ready to stay online?
Browse mini UPS units, power banks and solar backup in our Load Shedding Solutions collection — including the 12000mAh Mini UPS recommended in this guide. Use code LOADSHED15 for 15% off.