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Plaasjapie

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  1. Also just want to say thanks to all the contributors of this thread. My E&E engineering son returned back to his flat in Stellenbosch this week only to find the 4 year old Axpert King 1 inverter won't start up after the holiday. As this specific inverter requires a connected battery before it will startup, we originally thought it was just the battery which ran flat (he left it on ...). He first borrowed a 48V charger and charged the battery to 51V which then started the inverter , but with the same flashing LCD and LED lights problem as shown in this thread. Showed him this thread with the possible solution and he then proceeded to take apart the whole inverter, bought 2 new CAPs, soldered them in as replacements and put the whole inverter back together the next day. No screws left behind, he was hopeful ..., and VOILÀ (!) , inverter started back up functioning perfectly as before. Hopefully fit for a good few more years of service. R10 for the CAPs vs R12 000 for a new inverter, now that's a good deal. Reminded me of my days when I was his age when I fixed my PC's by just replacing the busted caps on the motherboard . It's a good feeling !
  2. R19 500-00 new don't think there is any warranty left after 3 years ...
  3. Hi I would appreciate some opinions please in evaluating an offer from a seller of a 2nd hand Voltronic 7.2kW Axpert inverter. It's 3 years old and in good working condition. Price range ? Thanks
  4. My son this weekend installed for me 2 x ESP32's powered with 5V, while the Max RS 232 converter connected to it uses the 3.3V, so I was just curious what you are meaning. They are connected to 2 different Voltronic inverters (Max 1 and King II ) and sends data to Home Assistant, which also updates a local database, and from where a Grafana dashboard can be viewed for both inverters. He also had an initial problem communicating with the newer model King II , with no replies received, but in the end it was a coding error on the ESP which didn't know how to interpret the responses that came in back from the newer King II which differed from the earlier model King I responses.
  5. Lithium Batteries SA has always been very open which cells and BMS they use in their batteries. Also, some overseas battery manufacturers is open with this as well. I don't know why most of our SA resellers are so shady ... Why are our suppliers not like this one ?
  6. This post is a good example of why I rage against these unscrupulous sellers of batteries in SA. If they won't tell you what BMS and Cells are inside, run away as fast as you can !
  7. Thanks ! Pretty sure this must be the BMS then here , https://www.cleverbms.com/list_15/82.html
  8. Volta is just a SA spec'd rebrand of this Chinese system builder ... https://www.genixenergy.com/power-storage-wall/5KWH-ES-BOX12-51.2V-Wall-Mounted-LiFePO4-Battery.html Volta refuses to disclose the BMS they use inside their batteries Volta refuses to disclose the cells they use ... It could be cheap 2nd life cells inside, sold as new. Who would know ? Volta does not want to allow me to monitor the individual cell voltages or temps inside the battery on a dashboard like Home Automation ... Volta does not provide a LCD screen on their batteries to show SOC, individual cell voltages, temperature, etc ... Volta does not provide a DC cut-off switch on their batteries Volta include cheap tin-coated (not 100% copper) DC battery cables with their batteries
  9. You should ask Hubble a few questions in return : Who stands behind their warranty on their batteries ? Can you have a copy of the guarantor's financial statements to see if they have a solid balance sheet to honor warranties ? A guarantee/warranty is only as good as the person/company who stands behind it ... Who manufacture the cells used inside the battery ? Is it new Grade A cells, and how many cells are there inside ? Who manufacture the BMS used to protect the cells inside the battery ? ( Long term testing done in Australia has shown that most battery system failures are due to BMS faults or failures ...)
  10. I strongly disagree. What is a brand essentially ? It's trust in the quality and history of performance and customer service in the long run of a company's products. If I buy a Mercedes Benz car, what am I buying ? Do I buy "some" engine that conforms to a certain standard, or do I buy the full backing and support and quality history of a company that stands by it's name, and has a reputation and brand value to protect ? There are many dubious new battery names in this SA market, and most times unsuspecting customers don't even know if there are new first Grade or Grade A cells inside or how many of them inside, never mind who made them ! This is shady marketing. If customers and the public are to be able to fairly judge and compare the different batteries on the market, then they must be able to know, exactly, what's all inside... to make an informed decision. It means nothing if someone posts that they have used x battery for couple weeks or months without "problems". On the other hand, if they tell me their battery has, for example, 16 CATL cells inside, with a proper respectable BMS, then it's a different story where I as consumer can research the long term history of it's components' performance.
  11. I'll say this again, 2 essential questions battery system manufacturers should be able to answer to consumers is : 1 : Who manufacture the cells used inside the battery, is it new Grade A cells, and how many are there inside ? 2: Who manufacture the BMS used to protect the cells inside the battery ? If they don't want to answer these 2 essential questions, then run away ! ( Long term testing done in Australia has shown that most battery system failures are due to BMS faults or failures ...) Even the LiFePO4 batteries sold on the PowerForum store they won't give me those 2 essential answers. If you are proud of what you are selling, and have nothing to hide, why are you not transparent ?
  12. 2 Essential questions battery system manufacturers should be able to answer to consumers is : 1 : Who manufacture the cells used inside the battery ? 2: Who manufacture the BMS used to protect the cells inside the battery ? If they don't want to answer these 2 essential questions, then run away ! ( Long term testing done in Australia has shown that most battery system failures are due to BMS faults or failures ...)
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