Router Battery Backup

RedViking said:
No I think I need 20V/5A to get 90-100W (sorry, cant remember the exact calcs).

Anyways, this small and portable power bank powers my notebook 2-4 hours supplying 90W, and then I still have the laptop battery left as it keeps it fully charged while working on it:

ZMI PowerPack No20 - 25000mAh/2xUSB-C/1x USB-A/210W PD Power Bank

Takealot.com: Online Shopping | SA's leading online store

South Africa's leading online store. Fast, reliable delivery to your door. Many ways to pay. Shop anything you can imagine: TVs, laptops, cellphones, kitchen appliances, toys, books, beauty & more. Shop the mobile app anytime, anywhere.
www.takealot.com www.takealot.com

View attachment 1181272
Click to expand...
Finding a DC-DC connector that is compatible with a person's particular laptop is a pain. Tried to find an HP one which was available on takealot and had to send it back as what was shipped wasn't an HP connector.
 
r00igev@@r said:
Finding a DC-DC connector that is compatible with a person's particular laptop is a pain. Tried to find an HP one which was available on takealot and had to send it back as what was shipped wasn't an HP connector.
Click to expand...
Laptop power and charging is not always that simple. @DA-LION-619 and I had a discussion on this somewhere, although it was for a Dell machine, it can also be applicable to others. With Dell it is just so much more complicated as they have a proprietary thing going to supply 130W via USB C. Non Dell adaptors are limited to 90W only, assuming the adaptor deliver that much. Some older Dell devices are capped at 65W max. Also in general if a laptop does not get enough power to charge and use it at the same time, the battery will still drain.
 
Bluetti who also make portable "power stations" claim that while you can use their device while it's charging it will shorten the Lithium ion battery life. So they don't recommend it.
 
Mirai said:
Bluetti who also make portable "power stations" claim that while you can use their device while it's charging it will shorten the Lithium ion battery life. So they don't recommend it.
Click to expand...
How does that work? I love it when manufacturers recommend things but don't tell you the reasons why.
 
Some more alternatives for when the power bank/stations DC requirements
can't be matched and AC will have to do.

Takealot.com: Online Shopping | SA's leading online store

South Africa's leading online store. Fast, reliable delivery to your door. Many ways to pay. Shop anything you can imagine: TVs, laptops, cellphones, kitchen appliances, toys, books, beauty & more. Shop the mobile app anytime, anywhere.
www.takealot.com www.takealot.com

YOOBAO 46200mAh Multi-Function Portable 65W Fast Charge Power Station

YOOBAO EN1 is both a power bank and an inverter, thus making it an ideal power station for charging and powering multiple devices. <br>Backed with a large capacity of 46200mAh and its multiple charging ports, it can charge simultaneously up to 5 devices making it a suitable indoors and outdoors...
www.loot.co.za
 
AAT1 said:
Some more alternatives for when the power bank/stations DC requirements
can't be matched and AC will have to do.

Takealot.com: Online Shopping | SA's leading online store

South Africa's leading online store. Fast, reliable delivery to your door. Many ways to pay. Shop anything you can imagine: TVs, laptops, cellphones, kitchen appliances, toys, books, beauty & more. Shop the mobile app anytime, anywhere.
www.takealot.com www.takealot.com

YOOBAO 46200mAh Multi-Function Portable 65W Fast Charge Power Station

YOOBAO EN1 is both a power bank and an inverter, thus making it an ideal power station for charging and powering multiple devices. <br>Backed with a large capacity of 46200mAh and its multiple charging ports, it can charge simultaneously up to 5 devices making it a suitable indoors and outdoors...
www.loot.co.za
Click to expand...


These devices look to be pretty pricey, pure sine wave and whatnot..
peak power, storage capacity, mixture of output options,etc...

www.syntronics.co.za

EN300WLPD 80000mAh PD Quick Charging Power Station Powerbank 300W Pure Sine Wave

Get yourself an easy to use and portable powerbank for laptops, phones, Wifi Routers, Projectors, Printers, Fans, Mini Fridge, Lamp, Cooker etc. It also has a torch so you will not be stuck in the dark, be it during loadshedding or when out camping. It is quite easy to recharge using...
www.syntronics.co.za www.syntronics.co.za
 
AAT1 said:
Some more alternatives for when the power bank/stations DC requirements
can't be matched and AC will have to do.

Takealot.com: Online Shopping | SA's leading online store

South Africa's leading online store. Fast, reliable delivery to your door. Many ways to pay. Shop anything you can imagine: TVs, laptops, cellphones, kitchen appliances, toys, books, beauty & more. Shop the mobile app anytime, anywhere.
www.takealot.com www.takealot.com

YOOBAO 46200mAh Multi-Function Portable 65W Fast Charge Power Station

YOOBAO EN1 is both a power bank and an inverter, thus making it an ideal power station for charging and powering multiple devices. <br>Backed with a large capacity of 46200mAh and its multiple charging ports, it can charge simultaneously up to 5 devices making it a suitable indoors and outdoors...
www.loot.co.za
Click to expand...
I wish they stop with the Ah rating and just show the Wh which actually means something. Without knowing the voltage the Ah rating is useless.
 
wingnut771 said:
I wish they stop with the Ah rating and just show the Wh which actually means something. Without knowing the voltage the Ah rating is useless.
Click to expand...

if the unit can output different voltages it makes sense to stick with the standard of Ah

  • • Total USB Output: 45W
  • • Type-C Output: DC 20V-2.25A / 15V-3A / 12V-3A / 9V-3A / 5V-3A
  • • USB-A1/A2/A3 Output: DC 12V-1.5A / 9V-2A / 5V-2.4A
  • • Inverter AC Output: 220V～50Hz 150W
  • • Independent AC power output switch
  • • Output Interface: 3 x USB, 1 x US-C, 1 x AC Output
 
r00igev@@r said:
I pinged ellies themselves and here is the reply:
View attachment 1181566So it look by all accounts a half decent box.
Click to expand...
On the Ellies Cube Nova on Geewiz...

I am pretty sure that the Geewiz description is because of the experience that I had. I bought the unit from Geewiz, tried to use it, followed all the instructions, but it kept inexplicably dying in the middle of the night. Eventually I setup a camera to catch when it died.

Geewiz were really good; they asked questions which I answered, reached out to the supplier, and the supplier provided feedback that it couldn't work as a UPS. They then advised that they had updated the site.
 
Steamy Tom said:
if the unit can output different voltages it makes sense to stick with the standard of Ah

  • • Total USB Output: 45W
  • • Type-C Output: DC 20V-2.25A / 15V-3A / 12V-3A / 9V-3A / 5V-3A
  • • USB-A1/A2/A3 Output: DC 12V-1.5A / 9V-2A / 5V-2.4A
  • • Inverter AC Output: 220V～50Hz 150W
  • • Independent AC power output switch
  • • Output Interface: 3 x USB, 1 x US-C, 1 x AC Output
Click to expand...
I'm talking about the internal battery voltage. Lets assume the voltage is 3.6V and the Ah is 40 therefore the pack will have a CAPACITY to deliver (3.6x40) 144Wh.

Now you know how long it will last with the various devices you will use in that list of yours.

But we don't know what battery its using, it could be 12V for all we know @ 40Ah in which case it then have a CAPACITY of 480Wh
 
wingnut771 said:
I'm talking about the internal battery voltage. Lets assume the voltage is 3.6V and the Ah is 40 therefore the pack will have a CAPACITY to deliver (3.6x40) 144Wh.

Now you know how long it will last with the various devices you will use in that list of yours.

But we don't know what battery its using, it could be 12V for all we know @ 40Ah in which case it then have a CAPACITY of 480Wh
Click to expand...

explain the calulcation then to get to my potential Wh? i.e if i were to then use the 9V output? Ah seems simpler
 
sn3rd said:
On the Ellies Cube Nova on Geewiz...

I am pretty sure that the Geewiz description is because of the experience that I had. I bought the unit from Geewiz, tried to use it, followed all the instructions, but it kept inexplicably dying in the middle of the night. Eventually I setup a camera to catch when it died.

Geewiz were really good; they asked questions which I answered, reached out to the supplier, and the supplier provided feedback that it couldn't work as a UPS. They then advised that they had updated the site.
Click to expand...
Do you have a copy of that to post? You can anon the names.
 
Steamy Tom said:
explain the calulcation then to get to my potential Wh? i.e if i were to then use the 9V output? Ah seems simpler
Click to expand...
V x A = W

A watt is a watt and is a unit of power. If a device uses 10W @ 19V or 10W at 9V it's still 10W. The 19V will use less amps than the 9V that's all. Using the above 144Wh capacity, both will last 14.4 hours.

10W/19V=0.52A
10W/9V=1.11A

So, the Ah is only half the story, we need to know the voltage (of the battery supplying the amps) aswell. If they just tell us the Wh instead, then that is the whole story, the end.
 
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Anyone run 24v Ubiquiti devices connected directly to 2x 12v batteries? My Mikrotik router, switch, and ONT is connected to a single 12v 33Ah gel battery that gets charged via a 100w panel. I'm thinking of adding a second battery and another panel, so I can power my two tough switches at the other end of the house on 24v, however, I assume the voltage while charging will be over 27v, and the input voltage for the switches are 22-24v 2.5A...

What will be the best way to regulate the voltage from the batteries to 24v? I'm sure I could just wire in a fuse, resistor, and a zener diode to do the job?
 
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