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  1. #1
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    Default Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Following up on the previous thread, decided to start the new one here.

    We removed our Probe lead acids earlier this week and order two Hubble AM-2 batteries.

    Unable to get our regular installers to help in time, we did the initial install ourselves (so keep your clever comments to yourself )
    The rush was thanks to the announcement of load shedding starting, and our lead acid banks not keeping the power on anymore.

    For monitoring on the Kodak King we used ICC via the micro USB port, and Solar Asssistant via the RS232. When we installed the Hubble battery (only one connected), we also installed the Hubble Cloudlink device as the King does not natively support the Hubble battery. Unfortunately the micro USB port also decided to stop working, so right now we only have the Cloudlink running.

    Next week I need to install the trunking for the cables, then an installer will be coming in to connect the two, redo the temp cables etc.

    When the two batteries are connected we need to work out cut off, back to grid etc to try and use the batteries daily, keeping sufficient spare for load shedding, and also change over to solar charging only, currently it is set to solar and grid.
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  2. #2
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Specs on the Hubble? Ah / Kw? Price?
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries


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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    R25k is a lot of Mandela's lately, but not bad for 5.5kw I think!
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Including VAT, so the real cost to the business is R21500.00 or so, yes it is, hopefully the right choice.

    I've phoned/emailed their support number for help a few time, so far absolutely brilliant.

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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Charging from grid is an expensive system but works for load shedding etc. I am not sure if you can prioritise supply or charging from solar
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    This weekend is a good example why it is not cheap to get off-grid. Absolutely no solar the entire weekend.
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by Dirk View Post
    This weekend is a good example why it is not cheap to get off-grid. Absolutely no solar the entire weekend.
    And that is the reality. To be completely off grid, is an expensive exercise.

    No ways you can afford enough panels and batteries to carry you 3 or more days without solar charge.

    The solution however is cheap.

    Stay grid connected to carry these events, or if you really have to be off-grid, get a decent 2kVA Inverter Generator.
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by Dirk View Post
    This weekend is a good example why it is not cheap to get off-grid. Absolutely no solar the entire weekend.
    I told you 3 penlight batteries wont work!
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by Dirk View Post
    This weekend is a good example why it is not cheap to get off-grid. Absolutely no solar the entire weekend.
    What was your load those days?


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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by Fluffy View Post
    And that is the reality. To be completely off grid, is an expensive exercise.

    No ways you can afford enough panels and batteries to carry you 3 or more days without solar charge.

    The solution however is cheap.

    Stay grid connected to carry these events, or if you really have to be off-grid, get a decent 2kVA Inverter Generator.
    I have an old 2kVA gennie that I'm not using, and serviced it over the weekend. I'm thinking of putting it to use should there be extended network issues by charging the 48V batteries through some type of charger.

    I cannot use the inverter to do that, as it does not like the gennie output. What charger would be best suited for this job, a golf cart charger?

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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by faniedup View Post
    I have an old 2kVA gennie that I'm not using, and serviced it over the weekend. I'm thinking of putting it to use should there be extended network issues by charging the 48V batteries through some type of charger.

    I cannot use the inverter to do that, as it does not like the gennie output. What charger would be best suited for this job, a golf cart charger?
    Depending on your inverter, you can just tweak the frequency range on the inverter from lets say 48-52 hrz as well as how much power the inverter must take from the generator. EG if you can charge at 8kw, your 5 kw genie will trip, but if you tell the inverter it will only draw the 5kw or less from the generator.
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by Engel View Post
    Depending on your inverter, you can just tweak the frequency range on the inverter from lets say 48-52 hrz as well as how much power the inverter must take from the generator. EG if you can charge at 8kw, your 5 kw genie will trip, but if you tell the inverter it will only draw the 5kw or less from the generator.
    Are these settings possible with the old Mecer Axpert 5kva inverter? I have a 2kva generator but haven't connected it to the inverter because the inverter charges 60amps when Eskom returns. Generator will never keep up with that. If I can set it to 1.5kva draw from generator I will out charge the load.
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by Engel View Post
    Depending on your inverter, you can just tweak the frequency range on the inverter from lets say 48-52 hrz as well as how much power the inverter must take from the generator. EG if you can charge at 8kw, your 5 kw genie will trip, but if you tell the inverter it will only draw the 5kw or less from the generator.
    My newer generation Axpert at the office can do that, and it works well on a gennie, but the older type I have at home does not have a gennie input setting as far as I know

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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by faniedup View Post
    My newer generation Axpert at the office can do that, and it works well on a gennie, but the older type I have at home does not have a gennie input setting as far as I know
    The older one is generator / utility. So you will have to get a changeover switch. So I'm not sure if it can be set to draw less from genset, how would it know if incoming power is from generator or utility?
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    .
    Last edited by stephenplumb; 2022/05/27 at 03:06 PM.

  22. #17
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Quote Originally Posted by allandell View Post
    What was your load those days?
    Sorry forgot to reply! It was after hours, so 500w daytime, and 700w once the outside lights switches on.

  23. #18
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    Hooked up the second battery today, and also changed the charging mode to Solar only. The inverter is set for return to grid at 47v, but I need to check that value to ensure there is always enough for load shedding.

    We did not really do this to try and save money, but now that we have the batteries we can just as well use them.

    Only problem is I have absolutely no grid monitoring at the office, so I have no idea what the real effect will be after a full month's municipal bill. Geyser is disconnected so there are no big loads running off the inverter, and on the grid it is only the coffee machine, Bizhub printer and small fridge.

  24. #19
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    The two batteries are not in sync/the same, spoken to Hubble yesterday who recommended we upgrade the firmware on both, it stayed the same, this morning I spoke to them again and they recommended that we must discharge the batteries and charge them up again.

    Today was rain so no solar power, I disconnected the panels and the grid at 11am, and we ran the office until 4pm on the batteries at which time they were down to 44v (cut off recommended by Hubble is 42v). The load was about 1.5kw the whole time, spiking probably 2-3 times when the Bizhub printer was printing.

    If I work this out correctly, we used 7.5kWh, the batteries combined are 11, so I did expect a bit longer to get to 44v, but this does mean that during our after hours times when the load is 0.5 and 0.7 we can expect about 10 hours on batteries (down to 44v, although our return to grid is set to 47v, so probably only 6-7 hours based on that).

    The figures to me still look the same, will give it time to see if they settle/balance. (I am also not 100% sure that it is important, but in my mind the two should be the same?)
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    Last edited by Dirk; 2022/05/20 at 10:16 PM.

  25. #20
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    Default Re: Kodak OG-Plus 5.48 (King) with Hubble AM-2 Batteries

    I fear that you may be over analysing.

    Let them run for a week.

    Even as they are now, they are within the realm acceptable.

    Edit - Which parameters are you worried about.
    Last edited by Fluffy; 2022/05/20 at 10:49 PM.
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