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  1. J

    Pros/cons of the non-Enphase microinverters

    Hi, what do you say 4 ports hoymiles have only 2 mppts? I though that, for example, HMS-2000 has 4 mppts and there are subversions with only 2 mppts: HMS-2000C/D-4T. But the "original" one has 4 mppt, hasn't it ?
  2. J

    ENJ Power for Heltec/JK BMS

    Hi, has anyone try to find RX/TX pins in the bluetooth module inside JK BMS???? Probably we could connect an ESP8266 or ESP32 to work as a serial/wifi converter, so the signal doesnt need to converter from RS232 to RS485 (inside BMS) and then RS485 to RS232 and USB outside. I don't know if it...
  3. J

    15 dollar ebay 5A MPPT Solar Charge Controller

    Hi, any improve with your "adjustable MPPT with INA226" project? Thanks.
  4. J

    BMS and MPPT solar charger controller configurations

    Hi, anybody has any opinion or experience ? Thanks.
  5. J

    BMS and MPPT solar charger controller configurations

    Thanks a lot for your point of view. I think this post is very special because I hadn't found any other post discussion this type of installation (BMS + MPPT) But in my case, my MPPT SCC hasn't got that kind of input. At this time, we have just two opposite options, haven't we? GNUBIE: 2...
  6. J

    BMS and MPPT solar charger controller configurations

    I think I understand that your proposal could be (more or less) 2. MPPT-SCC: max 28.4 v, and BMS: 28.2 V, so max per cell: 3.525 V Then the MPPT-SCC will never stop (or implement your second parragraph solution to stop SCC). That is my doubt, what is better. Hi, my load is an inverter...
  7. J

    BMS and MPPT solar charger controller configurations

    Hi, thanks a lot for your quick answer, so your proposal is (within 3 options): 2. MPPT: max 29.2 - gap and BMS: max per cell 3,65. And what gap: 0.1V or 0.2V or more or less? But with in your example with Victron default profile, we can rewrite it as: 2. MPPT-SCC: max 28.4 v, and BMS: 29 V...
  8. J

    BMS and MPPT solar charger controller configurations

    Hi, I already have a Victron MPPT 75/15A solar charger controller. And I am trying to build my own powerwall with LifePo4 32700 battery cells. Because I like a lot the DIY philosopy, I will try to make also the famous DIYBMS v4 or similar. but it is the same, and it is not key to this question...
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