Possible back up power solution?

Discussion in 'Power cuts' started by Rob13, 29 May 2015.

  1. Rob13

    Rob13 MASA Contributor

    Joined:
    7 Feb 2015
    Posts:
    277
    Likes Received:
    33
    Location:
    Pretoria
    Hi everyone,

    I have gotten to the stage where I am ready to add livestock to my tank however, I would like to ensure that I have some back up power for approximately 4 hours before I add any livestock. Thankfully the area where I stay is not hit by load shedding too often (touch wood) but I do still need some sort of back up.

    First and foremost, electrical/technical knowledge is not my field at all so please excuse my ignorance.

    The tank is 1200mm x 600mm x 500mm. I am wanting to be able to run my return pump and my two flow pumps. This works out to approximately 120W to run all three.

    I have been quoted on the following unit:
    "A SSPRO 1100L with 2 x 12V12Ah batteries. This unit will deliver a pure sine wave 230VAC 800W for a minimum of 30 minutes".

    Has any one ever heard of or used one of these? Am I being silly and missing some other obvious solution? Being a student, I do not have a massive budget but will do what I can to ensure the tank gets the best that I can afford.

    Thanks in advance for the help.
     
  2. AdS Guest




    to hide all adverts.
  3. Bendor

    Bendor

    Joined:
    20 Aug 2011
    Posts:
    1,491
    Likes Received:
    30
    Location:
    Pietermaritzburg
    You should try and get a deep cycle 12V, 105 amp hour battery and an inverter that produces a pure sine wave, that starts automatically when the power stops and charges the battery when the power is on.

    I bought my battery from Mr Battery or similar and the inverter from Matrixwarehouse. They had a special about a year ago.
     
  4. LCornelius

    LCornelius Moderator

    Joined:
    5 Mar 2009
    Posts:
    5,460
    Likes Received:
    124
    Location:
    Durbanville (CPT)
    Are you sure on the 12amp batteries?

    They will not work, you will at least need 105amp batteries.

    If I may ask, how much did they qoute?
     
  5. Rob13

    Rob13 Thread Starter MASA Contributor

    Joined:
    7 Feb 2015
    Posts:
    277
    Likes Received:
    33
    Location:
    Pretoria
    @Bendor do you have any vague price estimate for this?

    Quote definitely says 12 amps yes... Not knowing enough about these sorts of things I know I am opening myself up to be taken for a ride by retailers that's why I thought that I should check with more knowledgeable people.

    The quote I received was for R6500...
     
    Last edited by a moderator: 26 Nov 2015
  6. Bendor

    Bendor

    Joined:
    20 Aug 2011
    Posts:
    1,491
    Likes Received:
    30
    Location:
    Pietermaritzburg
    Battery around R1400 and inverter R180. Best price for an inverter by more than a R1000 at the time. Don't know if matrix made a mistake with the special.

    First inverter/charger from ACDC cost R1800 and gave nothing but problems. Really poor after service as well. Eventually gave it away.
     
  7. Bendor

    Bendor

    Joined:
    20 Aug 2011
    Posts:
    1,491
    Likes Received:
    30
    Location:
    Pietermaritzburg
    That price is ridiculous.

    Why do you want to run your return? What's in the sump that needs flow? If no DSB you could run 1 flow pump aimed slightly up to agitate the surface for oxygen exchange and flow and also an air stone if you have a bio cube bom. One 105ah deep cycle battery should last you a whole day.
     
  8. Bendor

    Bendor

    Joined:
    20 Aug 2011
    Posts:
    1,491
    Likes Received:
    30
    Location:
    Pietermaritzburg
    @dallasg has his fingers in some inverter pie I think. Maybe he can help.
     
    Last edited by a moderator: 26 Nov 2015
  9. Toolboysa

    Toolboysa Moderator

    Joined:
    30 Nov 2010
    Posts:
    2,252
    Likes Received:
    134
    Location:
    Wilgeheuwel
    As I understand it. You need your total W to choose the inverter so I your case 120w but you need to double that number for startup load. So min W inverter should be 240w. So I think 800w inverter is abit overkill. Deep cycle batteries are rated over 20hrs. So if your equipment is pulling 5.25A it will take 20hrs to drain the 105amp/h battery

    Ive got the 1200w ellies inverter 24v system. So needs 2 batteries just to work. Its got 2x 105amp/h batterries. I run my dc return pump and my tv and rasperry pi very easily through load shedding
     
  10. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

    Joined:
    18 Dec 2012
    Posts:
    2,655
    Likes Received:
    139
    Location:
    Durbanville
    Simple way is to work out your watthours. So for e.g you have a 300w heater that will be on during 2.5 hours load shedding(hypothetical speaking). Your whours are 750wh. Then if you use 12v battery 62.5ah with battery inefficiency 1.5 =93ah So using 1 x 105ah battery should be fine.

    We are waiting for about 10 awesome on grid invertors soon. From 1000w to 2500w. We have selected the full function pure sine wave auto change over and charger included. Looking forward to that.
     
    Last edited: 30 May 2015
  11. Quintus

    Quintus the irish aXeman

    Joined:
    11 Jan 2010
    Posts:
    389
    Likes Received:
    11
    Location:
    Vereeniging AH
    I would suggest you guys refrain from the pathetic 105ah 3 year lifespan of the deltec or royal batteries, instead opt for the sealed lead acid solar DEEP CYCLE BATTERY 10 YEARS DESIGN LIFE, these go for literally 2% more in price than the deltec of royal batteries.
     
  12. Dexter

    Dexter

    Joined:
    24 Feb 2014
    Posts:
    1,017
    Likes Received:
    126
    Location:
    Randburg
    I bought a 105ah battery and inverter from communica.co.za. for half the price you were quoted two weeks back. Very simple to use. Send me pm if you would like more info.
     
  13. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

    Joined:
    18 Dec 2012
    Posts:
    2,655
    Likes Received:
    139
    Location:
    Durbanville
    where do you suggest the best place to buy these ?
     
  14. Toolboysa

    Toolboysa Moderator

    Joined:
    30 Nov 2010
    Posts:
    2,252
    Likes Received:
    134
    Location:
    Wilgeheuwel
  15. Toolboysa

    Toolboysa Moderator

    Joined:
    30 Nov 2010
    Posts:
    2,252
    Likes Received:
    134
    Location:
    Wilgeheuwel
    On the left side you can specify the type of battery
     
  16. Quintus

    Quintus the irish aXeman

    Joined:
    11 Jan 2010
    Posts:
    389
    Likes Received:
    11
    Location:
    Vereeniging AH
    Andre@ReefAquatics likes this.
  17. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    Will one have to change the UPS? or will the ones that charge to deltec be OK.

    I am close to replacing my 5 deltec and will look at this option if i don't have to change the UPS.
     
  18. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    Whilst we are on batteries. Can one get the Deltec batteries reconditioned? If so, is to worth it?
     
  19. Toolboysa

    Toolboysa Moderator

    Joined:
    30 Nov 2010
    Posts:
    2,252
    Likes Received:
    134
    Location:
    Wilgeheuwel
    Not sure. You will have to phone one of those battery repackers
     
  20. Rob13

    Rob13 Thread Starter MASA Contributor

    Joined:
    7 Feb 2015
    Posts:
    277
    Likes Received:
    33
    Location:
    Pretoria
    I've got bio cubes in the sump that are attached to the overflow pipe (actually gives me more flow this way than with an airstone) as well as about 3L of matrix... Wanted to run the return to ensure that bacteria stays alive and kicking as well as to provide additional flow (water displacement).

    Do you have any idea of when this would be?

    On this example, is it suggested that I try and buy a big enough UPS/inverter to be able to run a heater? I was told to focus on flow and that heaters do not really do well on UPSs?

    Thanks so much for all the replies... I do have to be honest that trying to read up on this hasn't helped me too much, I feel very much out of my depth... I know there is no such thing as a quick plug and play option but it seems that the quote I did receive will not be very helpful and that I should try some of the options suggested on this thread...
     
  21. rhox

    rhox

    Joined:
    2 Sep 2013
    Posts:
    173
    Likes Received:
    11
    Location:
    George
    Tagging along. This seems to be the way to go.
     
    Dylant likes this.
Recent Posts

Loading...
Similar Threads - Possible power solution Forum Date
PC power supply for LED unit? Possible or not? Anything DIY Related 25 Jun 2013
Vortech: 2 pumps on 1 controller/power supply? possible? Pumps and Waterflow 15 Apr 2010
Possible white apot Quarantine Tanks, sick fish, QT corals 11 Jul 2016
Possible upgrade, what about the skimmer? Protein Skimmers, Mechanical Filtration 8 Nov 2015
ID needed on Gorgonian and possible nudibranch? ID Needed 5 Nov 2015
Possible eskom solution with your water change General Discussions and Advice 5 Aug 2015
ID if possible please ID Needed 27 Jan 2015