diy solar

diy solar

Recent content by -C-

  1. -C-

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Thanks for your reply- my mistake, it is indeed a Sofar ME3000SP. Today I found the battery connection CAN cable that came with the inverter. It's actually RJ45 at both ends. The battery end has a standard looking molded on connector, but the inverter end has custom wiring (assuming it just has...
  2. -C-

    JK BMS CAN bus comms now possible for inverters that support Goodwe and Pylontech batteries

    Hi- @Starman I'm trying to get this up and running with my Sofar S3000 and read that you've managed this. I've purchased one of @uksa007 's pre-built boards and connected it to my Wi-Fi, then connected the JK adapter board to the inverter's CAN socket using a standard ethernet cable. When I...
  3. -C-

    Darfon Gro Watt GBLI 5001 Battery Pack- worth a punt?

    Thank you- I have just ordered one of your kits. It looks like a great project and I look forward to seeing it in action. It will also be a doorway into ESPHome, which I haven't looked at before. After just a brief look at available options I can think of many useful applications for it.
  4. -C-

    Darfon Gro Watt GBLI 5001 Battery Pack- worth a punt?

    Was just thinking this as I was putting mine back together the other day. I actually pulled mine out of a scrap metal pile! The battery enclosures are so nicely made as are all the internal components- the BMS definitely seems to be the weak point. If I worked at the company I'd be pithed off...
  5. -C-

    Darfon Gro Watt GBLI 5001 Battery Pack- worth a punt?

    Bit of a belated update, but since I started this thread I've managed to finally get a new BMS installed. To test whether my battery was worthy of spending out on a BMS for, I got a used Sofar ME3000SP from ebay and ran some charge/discharge cycles while monitoring the string voltages manually...
  6. -C-

    Dead Soltaro Batteries- is there anything I can do with these?

    I've been offered three of these units. Can find no info about them, other than they appear to be made in Australia. The fact I can't see a model number on them doesn't help. There's no voltage on the cells other than a few .1 V +/- The owner said I should dump them if they're no good to me...
  7. -C-

    Easy fix for small Victron inverter that's blown from reverse polarity

    A kid at the place where I used to work made up an extension cable with the wrong polarity at one end and blew 3 new inverters before he came to ask me what was going on. I ended up with the inverters and figured it was worth at least trying to get them going again. I did some searching and...
  8. -C-

    Can anyone recommend a method to monitor & log DC Wh input to a 48 V LA bank?

    Hello- I am looking for something shunt or hall effect based that's not too expensive and will work with an input of up to either 125 or 250 Watts @ 48 V. It's really only input Wh that I'm interested in, but the more info recorded the better. Thanks
  9. -C-

    Darfon Gro Watt GBLI 5001 Battery Pack- worth a punt?

    Thanks- I think I should be able to get this for maybe £100 or less, so definitely seems worth a shot based on those prices. I think I'm initially going to try it on a small 48V load without a BMS while monitoring the string voltages manually. At least that will give me some idea as to its...
  10. -C-

    Darfon Gro Watt GBLI 5001 Battery Pack- worth a punt?

    A rather belated update on this back-burner project... I bypassed the BMS and charged the battery very slowly (3 A across all cells until system voltage reached the specified 57.4). This took a long time as I have not been able to get to my workshop much and I did not want to leave it charging...
  11. -C-

    USB-c PD. 100 watt for DIY solar generator?

    Also interested in this- do you have any details on the 100W car charger? I've not been able to find anything.
  12. -C-

    Darfon Gro Watt GBLI 5001 Battery Pack- worth a punt?

    Thanks all- I've got the ability to play about and test them without making any commitment, so I might as well try. These were in the south of England- there aren't much in the way of temperature extremes here, so maybe the cells won't have been affected by the temps. But the low SoC for a...
  13. -C-

    Darfon Gro Watt GBLI 5001 Battery Pack- worth a punt?

    Thanks- I meant to say that he's not sure how long they've been sat for. I'll see if he can find out- he does seem to know the original owner. Info so far has been vague, other than it was installed in an attic and upgraded a while ago. I'd like to give charging them a try. My issue is with how...
  14. -C-

    Darfon Gro Watt GBLI 5001 Battery Pack- worth a punt?

    I've been offered this - seller is fair and flexible, price is somewhat dependent on how useful it'll be for me. I can't get any sign of life out of the BMS, but that's likely due to the string voltages. Took out one row and this is what they measured at: It's using these Boston Power...
  15. -C-

    My lightweight portable power station build

    Hello- I'm planning on doing something similar. Has this been working out OK for you? How did you end up housing everything and end up orienting your cells? I read (under Mechanical Installation here) that it's not a good idea to lie cells down unless they're designed for it, which messes up my...
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