Router Battery Backup

Speedster said:
  • The third option is to put a larger battery on the UPS. What is the largest capacity battery one can safely connect up to a UPS this way?
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I am no guru, but there is no limit on the capacity of the battery one can connect to a UPS. Your two main issues here, from what I know (please feel free to correct me):

  • Limit in the charging circuit.
    The charger in the UPS might only be x Amps and will obviously take longer to charge a 100Ah battery compared to the 7Ah it was designed to charge. With the higher stages of loadshedding you might run into the issue of not having enough time between loadshedding to get the batteries charged up sufficiently.
  • The heat factor.
    The UPS and charger might not have been designed to be in constant charge mode. My UPS is rated to take 4-6 hours to charge the small 7Ah battery inside of it and can thus 'handle' the heat generated by something like that. I upgraded it to 2 x 9Ah and I am thus forcing the UPS to work doubletime. Technically I should be charging the batteries from a charger that was designed to be in a constant charging state and that can handle the heat. That, or I must charge the batteries externally.
 
Speedster said:
Couple of questions for the power-guru's on this thread. I currently have a Tescom 700VA UPS powering a B618 and B315 router, and a separate 50VA 12V transformer for my alarm.
  • I'm thinking of changing out the alarm PSU with a Ratel 860P (the 60W one) and connecting up my router (B618) to this too (the B315 will be decommissioned)
  • Alternatively, I've seen there are LiPo battery replacements for the standard 7Ah SLA battery. Are these any good? Are they a straight swop for the SLA, and would they give any performance boost over the SLA?
  • The third option is to put a larger battery on the UPS. What is the largest capacity battery one can safely connect up to a UPS this way?
Click to expand...

If it outputs 12V, then anything accepting 12V DC at say 1A or 2A should be fine.

That said, I also wanted to hack my small computer UPS and swap out the 7ah battery for something bigger, but the charging circuit only puts out about 1.5A, so it is useless to do this if you have more than one loadshedding per day.

I rather spent the money on a proper UPS with a 10A charging circuit, which means I can survive 4 hour loadsheds twice a day as long as there are 6 hours inbetween.
 
Speedster said:
I'm thinking of changing out the alarm PSU with a Ratel 860P (the 60W one) and connecting up my router (B618) to this too (the B315 will be decommissioned)
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Do you know of a place that has stock of the 860P? Both Communica and Sinetechstore have no stock at the time of this post. The B618 also uses more current than the B315, but I think it may only be 3 or 4 watts more in total. Should be fine for your runtime estimates.
 
Lupus said:
Okay so the one I've gotten from Geewiz

Mini UPS

Buy Mini UPS online at the Best Prices! Door to Door and Overnight Delivery. Voted the best online store in SA. View Here
www.geewiz.co.za www.geewiz.co.za
Has pulled through all 4.3 load shedding, a 6 hour power failure and this morning 5.30 hour power failure powering both the ont and a planet router.
Click to expand...
They are great. Got two now.
 
biometrics said:
Just get a 430m and 430p, same thing though a bit more expensive.
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860p is 60w and twice the battery capacity

Edit: realise I might have misunderstood you if you meant to get one of each. Either way, my alarm requires more than 30w, so your suggestion won't work.
 
Speedster said:
860p is 60w and twice the battery capacity
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The 860 (which I tried to order) is basically the combo of a 430p and 430m. Same capacity and ports.

So if you don't want to wait, you don't have too. I will likely add a 430m (I have a 430p).
 
biometrics said:
The 860 (which I tried to order) is basically the combo of a 430p and 430m. Same capacity and ports.

So if you don't want to wait, you don't have too. I will likely add a 430m (I have a 430p).
Click to expand...
How would you connect a 50w device in this configuration?
 
biometrics said:
My 430p was around R700 plus delivery.

www.communica.co.za

Search Results

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www.communica.co.za www.communica.co.za

Or Sinetech if you are up north.

sinetechstore.co.za

Sinetech Store

We apologize for the inconvenience. For assistance, please contact us via the details below: Email: [email protected] Contact Us: ‪+27 11 453 0924
sinetechstore.co.za sinetechstore.co.za
Click to expand...
It says voltage selectable. Is the output selectable individually on this device ?
I need 12v for cpe and 9v for the router.
 
joker08 said:
It says voltage selectable. Is the output selectable individually on this device ?
I need 12v for cpe and 9v for the router.
Click to expand...
The m model has a 9/12V selectable port and four 12V ports. And 5V USB.
 
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