How to Keep Your Internet Running During Load Shedding
Power your router (and fiber ONT, if separate) from a small DC "mini UPS" or your home inverter UPS. Routers use very little power, so a mini UPS can keep WiFi on for several hours of load shedding — as long as your ISP's street equipment also has backup power.
Which backup option should I choose?
| Option | Pros | Cons |
|---|---|---|
| DC mini UPS for router | Cheap, efficient, several hours of backup | Check voltage (usually 9V or 12V) matches your router |
| Home inverter UPS | Already installed in many homes | Inefficient for a small load; drains batteries faster |
| Power bank with DC cable | Portable | Needs correct voltage booster cable |
| Solar setup | Long-term solution | Higher upfront cost |
Why does internet still go down even with a UPS?
For DSL and some fiber networks, the cabinet or node in your street also needs power. If your ISP's equipment there has no or weak battery backup, your connection drops even if your router stays on. Ask your ISP about backup at your local node; 4G towers usually have generator or battery backup but may slow down when neighbouring towers go offline.
Safety tips
- Match the router's voltage and connector exactly.
- Keep UPS units ventilated, especially in summer.
- Replace swollen batteries immediately.
Frequently asked questions
How long will a mini UPS run my router?
It depends on battery capacity and the router's power draw; many setups provide several hours. Check the specifications of both devices.