CPE and Router

[randburgred]

I noticed that both my CPE and wireless router are DC and have a charger which one presumes changes the current to AC With all these load sheddings could I hook these up to a battery or is this not a good idea

 

[tibbydudeza]

Buy a cheap UPS ... less risk of blowing things up .

https://www.takealot.com/rct-650va-line-interactive-ups/PLID32714409

 

[portcullis]

We've done this many times.

However, I would not recommend doing this to equipment that you don't own. For example an ONU installed by a FTTH network, or a router managed by your ISP.

If you own the kit and you know when end of a soldering iron gets hot, it's a different story...

We use DC regulators to ensure that the voltage is stable.

LM7805 for 5V
LM7809 for 9V - Some TPLinks.
LM7812 for 12V

Don't be shy when it comes to heat syncs for them.

Devices that need 24V, use a DC DC step up. You can source them on ebay if you have time on your hands or at ACDC or Mantech if you need it now.

A 33ah battery used for electric gates will see you through load shedding.

The expensive component of this equation is the charger. You need a clever charger, such as a Meanwell or a Ctech - at least 10A as you have to have the battery back up to charge before the next round of load shedding.