Inverters The right choice - Page 2





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  1. #21
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    Quote Originally Posted by Prof View Post
    ....and the fine print....or rather small print at the bottom:

    'Note: this is not pure sine wave inverter'
    Hi, Here is a photo of my setup, 1440W inverter with 2 x 102 amp Enertec batteries mounted on wheels.
    Attached Images Attached Images  

  2. #22
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    Quote Originally Posted by RooiWillie28 View Post
    I picked up a Mecer (IVR-1200LBK) inverter from Mustek today. You can get them on bid or buy for about R1300, then you just need the batteries and dc breaker. Not sure on the price of the dc breaker, but 102ah batteries you can get at R1250 at Umbani solar in Centurion - just Google Umbani Solar for their info. Then you need to get / build a battery case and hook it all up. I tested it now with my gaming pc, hifi, 3g router and a led lamp, and it gave me 66 minutes on a 36ah battery. Wattage is an estimated 300 Wat that was running.
    In comparison, we are using a 1kw pure sine wave unit, load of about 36%, two 105ah batteries (in series), and we get 5 hours on it.
    Edit, inverter cost about R6k without batteries, cabinet ready with cabling for two batteries.
    Last edited by Dirk; 2015/05/19 at 08:40 PM.

  3. #23
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    Quote Originally Posted by PaulH View Post
    Hi, Here is a photo of my setup, 1440W inverter with 2 x 102 amp Enertec batteries mounted on wheels.
    Cost of inverter R3,900.00 plus vat, excluding batteries 2 x 102 amp/h Enertec.

  4. #24
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    Quote Originally Posted by duncang View Post
    Any secret to the fan running Rooiwillie ? Just unplug and wait for Gridwatch warning? I bought the assembled set from Geewiz. Works a treat. Not a flicker on tv screen during switchover. Still to test time from it's 102 Energizer.
    Unfortunately it runs the whole time.

  5. #25
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    Quote Originally Posted by Dirk View Post
    In comparison, we are using a 1kw pure sine wave unit, load of about 36%, two 105ah batteries (in series), and we get 5 hours on it.
    Edit, inverter cost about R6k without batteries, cabinet ready with cabling for two batteries.
    Pure sine is the way to go! However, for some the cost is not justified.

    The general felling that I get from talking to people and the interwebs, anuthing with a powesupply is fine on modified (I.e. Computers, tvs, etc). But for appliances running on 220, it is better to go pure sine.

    Just as a last one, one of the guys at the office decided to plug his 2000va into the wall in reverse (giving to the db instead of drawing), and he claims its actually good for all his stuff, bar his 2 fridges. Including warming up his geyser...

  6. #26
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    Quote Originally Posted by RooiWillie28 View Post
    Pure sine is the way to go! However, for some the cost is not justified.

    The general felling that I get from talking to people and the interwebs, anuthing with a powesupply is fine on modified (I.e. Computers, tvs, etc). But for appliances running on 220, it is better to go pure sine.

    Just as a last one, one of the guys at the office decided to plug his 2000va into the wall in reverse (giving to the db instead of drawing), and he claims its actually good for all his stuff, bar his 2 fridges. Including warming up his geyser...
    Hi Rooiwillie, Agree that pure sine is the way to go, however it also depends on what you need to run off the inverter, mine is purely for load shedding, on selected equiptment. Therefore the cost factor does play a big role.

  7. #27
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    Choice between Multi Unit (Inverter/charger combined) or modular?
    Everybody needs to believe in something.... I believe I will have another Beer!

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  8. #28
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    Hi guys

    What do you think of this system? Seems reasonable? Looks like it runs 24V.

    http://www.geewiz.co.za/long-run-ups...kit-1440w.html
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    Quote Originally Posted by ChrisH View Post
    Hi guys

    What do you think of this system? Seems reasonable? Looks like it runs 24V.

    http://www.geewiz.co.za/long-run-ups...kit-1440w.html
    I bought the 12v yesterday from them. Great except for the fan running 24/7 so I assume I must disconnect after the battery is recharged?
    There is no task too simple for some people to complicate !



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  10. #30
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    Quote Originally Posted by ChrisH View Post
    Hi guys

    What do you think of this system? Seems reasonable? Looks like it runs 24V.

    http://www.geewiz.co.za/long-run-ups...kit-1440w.html
    This is a modified sine wave unit, and not pure sine wave, however if you run TV, Decoders and equiptment that has a power supply it can work.

  11. #31
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    Quote Originally Posted by duncang View Post
    I bought the 12v yesterday from them. Great except for the fan running 24/7 so I assume I must disconnect after the battery is recharged?
    Nope, it will charge the battery when empty and then maintain the charge when fully charged.

  12. #32
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    Quote Originally Posted by PaulH View Post
    Cost of inverter R3,900.00 plus vat, excluding batteries 2 x 102 amp/h Enertec.
    Hi Paul

    Please advise what inverter that is and who sells them?
    Currently do not own a 4x4, driving a sedan
    Ex: 2013 Ford Ranger 3.2 XLT 4x4 auto
    Ex: 2012 Ford Ranger 3.2 XLT 4x4 auto
    Ex: 2013 Ford Ranger 2.2 XLS 2WD manual
    Ex: 2009 Mazda BT50 3.0 CRDi double cab manual

  13. #33
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    Quote Originally Posted by Andz View Post
    Hi Paul

    Please advise what inverter that is and who sells them?
    PM sent

  14. #34
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    Quote Originally Posted by Fluffy View Post
    Fantastic.

    Lets see now, where can I buy 102AH Deep Cycles batteries for R1200.00 each.

    We don't live in a perfect world.

    These bundled systems are what they are.

    Nothing sinister, just be aware.
    I agree with Fluffy. R1200 ex Vat would be the buying price of a distributor from a supplier.

    From testing many of these units the to be aware off's in Fluffy's word I have seen would be.
    1. Most units have no protection on the Battery Circuit. You can add a fuse yourself.
    2. Their fan's run nearly all the time. Rather keep in separate room from TV if that's your intended use.
    3. Not to be connected to DB. Use as stand alone unit.
    4. Their Battery Low warning and Battery cut off voltages are basically at 0%. You will kill your batteries in no time if used fully. Especially those R1200 deep cycles.
    5. They actually work very well from a Modified Sine Wave perspective. (Referring to typical 1kVA to 2KVA range). From 3KVA mostly "Pure Sine" Units.)
    We have not found any problems with TV's / DSTV / PC's / Monitors even CFL's worked perfectly.

  15. #35
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    [QUOTE=Schalkb;2784080]I agree with Fluffy. R1200 ex Vat would be the buying price of a distributor from a supplier.


    Nope, I bought two of the same 102 AH, Energiser, deep cycle batteries from the same wholesaler in March and paid R 1220.00 excl vat per battery.

  16. #36
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    I went to a number of battery places for 102 AH batteries and most were between
    R 1980.00 and R 2090.00 and then you had to give in an old battery to get those prices.

    That R 1220.00 excl vat was with giving in no old battery.

  17. #37
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    The 102AH is a Semi-Deep Cycle. Not sure how that works.
    The 54 105AH is a Real Deep Cycle.

  18. #38
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    There's a real easy way to tell how "deep" a deep cycle is.

    Power to weight ratio.

    The heavier it is per AH, the better it is in deep cycling applications.

    The lighter it is per AH, the more of a high cycle or semi deep cycle battery.

    Not a hard and fast rule, but a very good indicator of the number of cycles a battery will deliver over its life span.
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    My LC weighs a ton!

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  20. #40
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    Quote Originally Posted by Fluffy View Post
    There's a real easy way to tell how "deep" a deep cycle is.

    Power to weight ratio.

    The heavier it is per AH, the better it is in deep cycling applications.

    The lighter it is per AH, the more of a high cycle or semi deep cycle battery.

    Not a hard and fast rule, but a very good indicator of the number of cycles a battery will deliver over its life span.
    Thanks Fluffy.

    Actually never thought of looking at it from that perspective.
    Make a lot of sense due to plate thickness etc.

    Seems that there aren't any real datasheets on these lower cost batteries to compare.

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