Router Battery Backup

I've been meaning to buy some form of router backup for a while now, so I don't have to run the generator for 2 hours of load-shedding, just to keep the internet going. Since the Ratel 860P is so hard to get hold of, I went for the Sherlotronic 6.4A model, and I'm very impressed. It has powered my Huawei ONT and Mikrotik router for 10 hours during a recent power failure, while keeping the battery voltage above 12V (according to the orange LED).

[17Ah x 12V = 204Wh. At 50% DoD, that's 102Wh, and since the Killawatt says they average just under 8W/h combined, I should get about 12hours.]

Now a friend has a power hungry Asus router - the brick says 19V @ 2.37A which is 45W. With the Sherlotronic, I was thinking of combining 4 outputs (2 parallel, 2 series) to give 24V @ max 2A which is 48W. Then possibly use this (https://www.communica.co.za/products/bmt-adj-dc-dc-module-3a-display) DC-DC converter, to step down to 19V.

Any else have experience powering 19V routers from battery (DC) backup?

I suppose in that sense the Ratel 860P would have 8x2.2Ah = 17.6Ah, but more discharge capacity. Just not sure about 19V... (or stock!)
 
jano said:
Now a friend has a power hungry Asus router - the brick says 19V @ 2.37A which is 45W. With the Sherlotronic, I was thinking of combining 4 outputs (2 parallel, 2 series) to give 24V @ max 2A which is 48W. )
Click to expand...

That don't work. You will damage the power supply and / or blow a fuse. Those outputs are most likely not fully isolated, so you cannot connect then in series. You will need 2 separate units, then couple then together in series to get your 24 volts, but this becomes a very expensive solution.
 
jano said:
I've been meaning to buy some form of router backup for a while now, so I don't have to run the generator for 2 hours of load-shedding, just to keep the internet going. Since the Ratel 860P is so hard to get hold of, I went for the Sherlotronic 6.4A model, and I'm very impressed. It has powered my Huawei ONT and Mikrotik router for 10 hours during a recent power failure, while keeping the battery voltage above 12V (according to the orange LED).

[17Ah x 12V = 204Wh. At 50% DoD, that's 102Wh, and since the Killawatt says they average just under 8W/h combined, I should get about 12hours.]

Now a friend has a power hungry Asus router - the brick says 19V @ 2.37A which is 45W. With the Sherlotronic, I was thinking of combining 4 outputs (2 parallel, 2 series) to give 24V @ max 2A which is 48W. Then possibly use this (https://www.communica.co.za/products/bmt-adj-dc-dc-module-3a-display) DC-DC converter, to step down to 19V.

Any else have experience powering 19V routers from battery (DC) backup?

I suppose in that sense the Ratel 860P would have 8x2.2Ah = 17.6Ah, but more discharge capacity. Just not sure about 19V... (or stock!)
Click to expand...

I have the same type of Asus Router (19v @ 2.37A)
I have managed to sort out that particular issue by gettin one of these.
Check this out on takealot: DW-LAZ009-Laptop Universal Power Adaptor 12-24V, AC/DC 100W

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It takes 12V in and has a selectable output voltage up to 24v.
Works great with my Asus router using my Gizzu battery backup.
Hope it helps
 
Have a Ratel 430M, classified link:

[S] Ratel 430m -New

Item name (be very descriptive): Ratel 430m Age and condition: 2 days old, new, sealed box Do you include packaging: Yes Warranty: Yes Reason for selling: Bought for a family member that doesn't want it anymore Price: R890 (R661.20+ R113 initial shipping cost +15% VAT) Negotiable: No Location...
mybroadband.co.za mybroadband.co.za
 
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jano said:
I've been meaning to buy some form of router backup for a while now, so I don't have to run the generator for 2 hours of load-shedding, just to keep the internet going. Since the Ratel 860P is so hard to get hold of, I went for the Sherlotronic 6.4A model, and I'm very impressed. It has powered my Huawei ONT and Mikrotik router for 10 hours during a recent power failure, while keeping the battery voltage above 12V (according to the orange LED).

[17Ah x 12V = 204Wh. At 50% DoD, that's 102Wh, and since the Killawatt says they average just under 8W/h combined, I should get about 12hours.]

Now a friend has a power hungry Asus router - the brick says 19V @ 2.37A which is 45W. With the Sherlotronic, I was thinking of combining 4 outputs (2 parallel, 2 series) to give 24V @ max 2A which is 48W. Then possibly use this (https://www.communica.co.za/products/bmt-adj-dc-dc-module-3a-display) DC-DC converter, to step down to 19V.

Any else have experience powering 19V routers from battery (DC) backup?

I suppose in that sense the Ratel 860P would have 8x2.2Ah = 17.6Ah, but more discharge capacity. Just not sure about 19V... (or stock!)
Click to expand...

The Sherlotronic says it has 6 seperate 1A outputs, so max 12W per output. Don't think it will handle 45W.

Can look at bigger power supplies from mantech, some have been linked earlier in this thread already. Just get one that gives 12v output with at least 4A on one output then you can add a 12v to 19v converter. Or they might even have a 19v supply already.
 
shakes1 said:
(If this post violates any rules, please let me know)

Have a Ratel 430M, bought for a family member who decided that they don't want it anymore so need to get it off my hands. Paid normal retail, including VAT and delivery. Anyone interested, drop me a PM.
Click to expand...

Ideally should be posted in the classified section with a link to the post from here ..
 
jano said:
snip..

Now a friend has a power hungry Asus router - the brick says 19V @ 2.37A which is 45W. With the Sherlotronic, I was thinking of combining 4 outputs (2 parallel, 2 series) to give 24V @ max 2A which is 48W. Then possibly use this (https://www.communica.co.za/products/bmt-adj-dc-dc-module-3a-display) DC-DC converter, to step down to 19V.

Any else have experience powering 19V routers from battery (DC) backup?

I suppose in that sense the Ratel 860P would have 8x2.2Ah = 17.6Ah, but more discharge capacity. Just not sure about 19V... (or stock!)
Click to expand...
deesef said:
That don't work. You will damage the power supply and / or blow a fuse. Those outputs are most likely not fully isolated, so you cannot connect then in series. You will need 2 separate units, then couple then together in series to get your 24 volts, but this becomes a very expensive solution.
Click to expand...
furpile said:
The Sherlotronic says it has 6 seperate 1A outputs, so max 12W per output. Don't think it will handle 45W.

Can look at bigger power supplies from mantech, some have been linked earlier in this thread already. Just get one that gives 12v output with at least 4A on one output then you can add a 12v to 19v converter. Or they might even have a 19v supply already.
Click to expand...

So, the spec sheet says: 70W. (http://www.sherlotronics.co.za/wp-content/uploads/2018/04/6.4AMP_lnstallation-Manual.pdf)

And this image - see attached, says you can bridge outputs.

Sherlo3.jpg
 
ginggs said:
In parallel, sure, but I agree with what @deesef warned above above connecting them in series.
Click to expand...
Ahhh, ok I get it. You can pull more amps but shouldn't go over 12 V?
What if you keep your total load under 12 Watts / output?
 
K3NS31 said:
Ahhh, ok I get it. You can pull more amps but shouldn't go over 12 V?
What if you keep your total load under 12 Watts / output?
Click to expand...
If outputs are not fully isolated, then the - are probably all common, so as soon as you connect the + of one output to the - you have a dead short.
 
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