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sjp

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  1. Like
    sjp reacted to DawieZA in Dawie's Solar Setup   
    The time had come to ditch some of my household's dependance on Eskom. Main install completed on the 31st of January (northern suburbs, Cape Town). The second battery was added on the 11th of February.

    Here is the kit used:

    1 x Sunsynk 5.5kW Inverter
    2 x Sunsynk 5.12kWh Batteries
    12 x JA Solar 460W Panels
    Six panels are facing east, and the other six panels are facing north.

    All plugs and lights in the main house are on the essential load, plus some plugs and lights in a wendy-house on my property. Geysers, jacuzzi, irrigation, large air-con, stove and flat are on non-essential load.






  2. Like
    sjp got a reaction from Beat in Is LFP going to last   
    It is dependant on how deep you discharge.
    The 6000 cycles that they state are usually for 80% DoD.
    Say 1 loadshed session of 2 hours uses 20% of your battery capacity, then 3 of those will be 60%
    So basically you would have used up 60/80 (0.75) of a "rated cycle"
    It does not matter if you use 20% and charge up or 60% and then charge up, they count as the same as far as the chemistry goes.
    The counters of the BMS may have their own idea of cycles( each BMS brand has its own idea in any case), but as far as the chemistry goes, you should be fine.
     
     
  3. Like
    sjp got a reaction from Steve87 in Is LFP going to last   
    It is dependant on how deep you discharge.
    The 6000 cycles that they state are usually for 80% DoD.
    Say 1 loadshed session of 2 hours uses 20% of your battery capacity, then 3 of those will be 60%
    So basically you would have used up 60/80 (0.75) of a "rated cycle"
    It does not matter if you use 20% and charge up or 60% and then charge up, they count as the same as far as the chemistry goes.
    The counters of the BMS may have their own idea of cycles( each BMS brand has its own idea in any case), but as far as the chemistry goes, you should be fine.
     
     
  4. Like
    sjp got a reaction from Bobster. in Is LFP going to last   
    It is dependant on how deep you discharge.
    The 6000 cycles that they state are usually for 80% DoD.
    Say 1 loadshed session of 2 hours uses 20% of your battery capacity, then 3 of those will be 60%
    So basically you would have used up 60/80 (0.75) of a "rated cycle"
    It does not matter if you use 20% and charge up or 60% and then charge up, they count as the same as far as the chemistry goes.
    The counters of the BMS may have their own idea of cycles( each BMS brand has its own idea in any case), but as far as the chemistry goes, you should be fine.
     
     
  5. Like
    sjp got a reaction from wolfandy in SunSynk, Dyness + Solar Assistant Setup   
    For comparison, I do not have a battery cable and this is all I can see:

  6. Like
    sjp reacted to GreenFields in Solar Panel angle   
    "Textbook wisdom" is your latitude plus 15 degrees adjustment for winter and minus 15 for summer. So in SA, from Musina at 22deg South to Cape Town at 34 deg South, a tilt angle somewhere around 25 or 30 degrees as a fixed average round number, directed at true north? But this makes more sense if you are using all the available power as it gets generated, or have enough storage or can exchange with the grid.
  7. Thanks
    sjp reacted to mzezman in New Home Automation Setup Advice   
    As far as i know there aren't zigbee devices that match those ones you listed. An alternative would be to get Shelly devices (im not too clued up on them) but they also function locally - you cand ecide for fully local or via the web IIRC
    If you use HomeAssistant then you can mix and match Tuya and Sonoff with no issues. On your phone though you would need the eWeLink app for Sonoff and Smart Home for Tuya - but HomeAssistant just works and once setup you don't even need to go back into those phone apps.
    SonoffLan and LocalTuya are just plugins - no additional gateway required. The Tuya devices do have to be connected via cloud first THEN you can port them to LocalTuya - there is a key you need from the Tuya IoT cloud 

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