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jlr

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Posts posted by jlr

  1. 14 hours ago, Scorp007 said:

    I have to agree with you on the operation of the Victron. I found the start voltage a bit too low but perfect for lead acid. Mine hardly ever showed that it is balancing using it on lithium. Also currently using a HA02 and I took one of the balancing wires to the outside of my battery box where I can measure the current to see when balancing and also see at what level and direction. Normally below 0.2A

    Not sure what you mean by too low? The Victron starts balancing at 27V, thus normally only on the charge cycle. The HA02 works differently, it will try to balance from a lower voltage true, so not just with the charge cycle. The Victron balances at 1A and the HA02 much less depending on the Voltage difference. 

     

     

  2. Must 1kW , good quality, quite fan, price good and importers helpful.

     

    MPPT version VPM version good, pure sine. Must one of the few affordable inverters that have a 3 stage(agm, lead, etc) and 4 stage charging (lithium) algorithm and program selection for lithium battery selection in setup. Very cool.

     

    https://www.solarwaysuppliers.co.za/wp-content/uploads/2021/08/3KW-VPM-MUST-DATA-SHEET.pdf

     

    https://www.bobshop.co.za/item/588474555/MUST_1KW_12V_MPPT_Inverter.html

     

     

    BTW I have one for sale R3250

  3. 21 hours ago, TaliaB said:

    I have previously used Victron balancers on the CFE 12v drop in batterys and Linergy 12v drop in, in series to achieve 24v they balance when charging but as soon as utility disconnects from inverter(islanding)it disconnect the inverter due to bms disconnecting on overcurrent. I changed the balancers to HA02 and works perfectly. The Victron balancers are for series connected lead type batteries.

    No problem, maybe an isolated incident as i have used them with lithiums (solarwize, hubble, lvtopsun, nernergy and champions ,etc)no problem with Must inverter. Maybe the BMS of the CFE/linergy not (fully) series compatible.

  4. 15 minutes ago, TaliaB said:

    Good price i see they are 1C cells should you need it.

    Unfortunately you can't use the Victron balancers on lfp batteries.

     

    Why do you say that?

    According to the Victron website, it is  a better practice to use balancer when using lithium's in series :

     

    The Victron Battery Balancer is a must-have for series-connected 12 Volt lithium-ion batteries. Unlike lead-acid batteries, lithium-ion batteries do not at all self-balance when they are charged; if an initial difference in state-of-charge exists it will continue to exist for all subsequent charge cycles. This can cause problems with the build-in Battery Management System of these batteries, switching off the lowest SOC battery when nearing empty, switching off the highest SOC battery while charging due to over-Voltage.

    The Victron Battery Balancer equalizes the state of charge of two series connected 12V batteries, or of several parallel strings of series connected batteries. When the charge voltage of a 24V battery system increases to more than 27V, the Battery Balancer will turn on and compare the voltage over the two series connected batteries. The Battery Balancer will draw a current of up to 1A from the battery (or parallel connected batteries) with the highest voltage. The resulting charge current differential will ensure that all batteries will converge to the same state of charge. One Battery Balancer can equalize a 24V lithium-ion battery bank, three of them can balance a 48V bank.

    If needed, several balancers can be paralleled to increase the balancing current.

    The Battery Balancer works for lead-acid chemistries too, though generally lead-acid batteries self-balance during the absorb charging phase.

    Features

  5. I must say, the prices they selling the Luxpower SNA 5000 for now (Sub R12k even saw sub R11k) it is easy to see why lots of people opt to go Luxpower SNA. You can even later parallel another SNA for 10kW and still only marginally more than one Sunsynk 5kW. Luxpower app is very good, regular updates/improvements, there was again an update just a few days ago.

     

    If you compare full hybrids, the Luxpower LXP and Synsynk/Deye i would go Deye.

     

    My Budget option to start would be:

    1x Luxpower SNA 5000 R12k

    1x SVolt 51.V 106Ah 1C R18k

    Total R30k plus installation.

    Add Jinko 555W R2400 per panel at least 4, pref 6.

  6. I have a Kodak 7.2kW Max and is running now for more than 2 years. No problems, only issue is maybe BMS compatibility with "cheaper chinese" batteries.

     

    AT +-R20000  i still think they are good value for money.

     

    The specs is very close to the 8.0 , looks like you "score" 800W maybe, rest looks the same?

    Weight:
    22 kg
    Rated Power:
    7,200 W
    Min PPT Voltage:
    90 V
    Max PPT Voltage:
    450 V
    DC Startup Voltage:
    90 V
    DC Shutdown Voltage:
    90 V
    Max Input Voltage:
    500 V
    Max DC Power:
    8,000 W
    Max AC Power (5 Minutes):
    7,560 W
    Surge AC Power (1 Second):
    15,000 W
    Max DC Current:
    36 A
    Max DC Inputs:
    2
    Has DC Fuses:
    0
    Connector:
    MC4  
    Included Connectors:
    2
    Euro Efficiency:
    93 %
    Transformer:
    None
    MPPT Quantity :
    2
    Has Integrated DC Switch:
    No
    Warranty:
    3 years
  7. I have used a few 1kW Fivestar PWM Solar inverters (Soltech) ones, the are very good. 800W solar input. And quiet. They retail for about R3250 of sometimes even less. or (MUST 1kW also option) And a Gel battery in budget (Goldshine  at china malls etc. actually good batteries although the chinese name suggests otherwise), then R5500. Will have a very nice little setup with solar. Aslo you CAN set cutoff voltages to protect the GEL battery!

     

    Or a "UPS" type like Sunmagic build in chargerIMG-20230206-WA0001kwpf.thumb.jpg.cb99b8a176588b40b0df08698abc2438.jpg .battery and cheapie solar controller. 

     

     

     

     

     

     

    FS Spec FBMpf.jpg

    IMG-20230226-WA0033pf.jpg

    56811866-1-pdpxl.jpg

  8. @Morena I have a Kodak at my house running already 2 years, no hassles.

     

    My brother installed a Luxpower SNA5000 and, i must say very nice inverter. It has a very nice app and you can do remote setting, monitoring even remote firmware updates. I would go for the Luxpower. The luxpower also are parallel compatible for later upgrade. But then the Kodal also.

     

    The Luxpower are compatible with most batteries, my brother have a cheaper SVolt battery and even that battery works with full comms etc. Very cool.

     

    As for the sell all and buy Sunsynk... why all you will get extra are possible bidirectional capabilities. If you want to do that then good option. But why spend more money for just another 5kW, unless you go for the 8kW. But i would rather buy more batteries or panels and leave the Luxpower as is. They are really good, my opinion as good as Sunsynk just cheaper. LXP Luxpower are also bidirectional.

    BTW whisch model Luxpower is in the new house? SNA or LXP?

     

     

     

     

  9. On 2023/06/07 at 11:07 AM, Solar Journey said:

    Hi Eurard,

    I would like to ask some questions., but forgive me I ask some questions that might be as a Noob. Its that's basically because I have only been researching the solar/inverter system for the past few weeks.

    1. I too have just bought the SVolt 5.09Kwh 106ah wall mounted battery and want to ask you about the inverter you chose, was it the fivestar 8.5Kva inverter?

    2. Does the SVolt battery have BMS communication with inverter?

    My 2C buy a Luxpower SNA5000 rather, comes with wifi and parallel and very good support on forum etc.

     

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