Router Battery Backup

spiff said:
Cool idea.
I just bought a romoss 16a from makro. Keeps my cell phone going so I can watch Netflix.

Think I'll go but another one now for my wifi router.
Click to expand...
Interesting.
I can't see what voltage this delivers..
Do you know?
 
@joker08: Many thanks for the feedback and the pics. Good to see that you have managed to get everything working so quickly. What is the clear box that you are using for the boost converter? What power bank did you try (10000mAh Adata PT100?) and any idea why it is not working as it should have a higher capacity than the 3200mAh lead acid battery. Maybe you should have just purchased a 12V lead acid battery and used that directly to power the routers without the boost converter?

If anybody else is interested, Leobot also has several cheap boost converters up to 10A.
https://leobot.net/viewcategory.aspx?s=step up

If anyone has a spare power bank and is looking for a cheap light source this USB bulb draws about 650mA and produces about 250 lumen from what I've read. You would probably need 3 of them to produce the same amount of light as a normal 800 lumen 240V 9W LED bulb such as the R25 Lumaglo A60 9W LED bulbs from Checkers.
https://www.geewiz.co.za/home-and-g...lb-5w-5v.html?search_query=USB+bulb&results=5

Here are some pictures of the internal construction of the bulb as well as many photos of the bulb when lit in a dark room in the seller feedback tab. The latest SAPO handling charges on small items would probably negate any saving by importing them directly from Aliexpress. You can purchase 5 of them directly for around ~$5!!!
https://www.aliexpress.com/item/New...lgo_pvid=04fa0ac8-04bd-4893-b831-c1370e13959d
https://www.aliexpress.com/item/5pc...lgo_pvid=7ffebb55-7fdc-408b-ac13-47f5d813584b
 
Geoff.D said:
Absolutely. At the moment the focus is on single device DC backup power, which willinvlve losts of chargers and batteries. But what if a proper DC back up disuribution was to be installed for all devcies that ultimately use DC power? Think about it and you will be surprsied to see jaut how many such devices already exist in the home.
Say each room in the house could have a DC power socket capable for 5V, 9V, 12V available for TVs, laptops, phone charging, IOT devices etc. ?
Click to expand...
Check this article on Minigrids:
https://www.economist.com/leaders/2...the-best-way-to-illuminate-the-bottom-billion
They differentiate between the different grid systems which is interesting but I have no doubt that these will challenge the national grids with their massively expensive distribution network, not to mention the equally huge generation infrastructure that supplies this power.
 
Jake45 said:
@joker08: Many thanks for the feedback and the pics. Good to see that you have managed to get everything working so quickly. What is the clear box that you are using for the boost converter? What power bank did you try (10000mAh Adata PT100?) and any idea why it is not working as it should have a higher capacity than the 3200mAh lead acid battery. Maybe you should have just purchased a 12V lead acid battery and used that directly to power the routers without the boost converter?
Click to expand...

I was using a Advantech 12000mah powerbank. It can power the router directly and when I connect it to the CPE (which requires 12v) I get the power light but doesnt get it working, so my first guess was it requires a buck convertor.
I bought the buck converter at mantech and when I was there I saw the battery only for R150 and a charger for it for R50 so bought it, just for back up. The 12V ones were out of stock.
The power bank is designed to deliver 5V at 2A when I connect it to the buck converter it delivers 12V for a seconds then it drops, may be its something to do with the protection circuit of the power bank because it has lithium cells which overheat and explode if the current draw is too high.
The clear box you see is actually a 18650 battery case. I vape, so have a few of them lying around.
 
Geoff.D said:
More detail please.
Click to expand...
Here you go
2b47060d712e4b1e74faf51e6a424171.jpg
5d2706efad51b772c13b18375e7a5bc0.jpg
f72b09ec5fe30fad2ec4bc3822304f48.jpg
80b2a021b14938eb6a55179bbec493a6.jpg
 
joker08 said:
I was using a Advantech 12000mah powerbank. It can power the router directly and when I connect it to the CPE (which requires 12v) I get the power light but doesnt get it working, so my first guess was it requires a buck convertor.
I bought the buck converter at mantech and when I was there I saw the battery only for R150 and a charger for it for R50 so bought it, just for back up. The 12V ones were out of stock.
The power bank is designed to deliver 5V at 2A when I connect it to the buck converter it delivers 12V for a seconds then it drops, may be its something to do with the protection circuit of the power bank because it has lithium cells which overheat and explode if the current draw is too high.
The clear box you see is actually a 18650 battery case. I vape, so have a few of them lying around.
Click to expand...

The powerbank can output max 10W at the rated 5V 2A, so could only output 10W at 12v(0.83A) with a boost converter and that's not factoring in efficiency losses. Many routers require a power supply rated at 12v 1A or more.

Also if no load is applied Romoss powerbanks auto switch off after a few seconds, did you test it with a load connected to the boost converter?

I have used a 12v boost circuit on my Romoss and it worked fine.
 
airborne said:
The powerbank can output max 10W at the rated 5V 2A, so could only output 10W at 12v(0.83A) with a boost converter and that's not factoring in efficiency losses. Many routers require a power supply rated at 12v 1A or more.

Also if no load is applied Romoss powerbanks auto switch off after a few seconds, did you test it with a load connected to the boost converter?

I have used a 12v boost circuit on my Romoss and it worked fine.
Click to expand...
Checked it with and without load, same thing happens.
I think I will try with a different power bank because u mentioned it's working with yours.
It would have been really convenient if the power bank method worked for me, because the lead acid battery takes too long to recharge.
 
Tried the powerbank to router with connector, didn't work on my TP-Link router (9v required) or a old netgear extender (12v required).
tired with a small and medium powerbank and with a 2amp cell charger no joy, Tp link pulls 40ma but does not boot.
 
Zuner said:
Tried the powerbank to router with connector, didn't work on my TP-Link router (9v required) or a old netgear extender (12v required).
tired with a small and medium powerbank and with a 2amp cell charger no joy, Tp link pulls 40ma but does not boot.
Click to expand...
can you post a pic of the connections ?
 
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