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Ingo last won the day on January 27 2020

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  1. Louis, a quick question. In your documentation you refer to a USB FT232R connection to the BMS. I assume it's 3V3 opposed to 5V to the BMS correct? Edit: Fixed wrong wording.
  2. I have two HA-02 Battery Balancers for sale, R500 each. Shipping is for the buyers account. Both are in perfect working condition and came from a working Lead-Acid installation. They are already fused on each battery positive leg, ready for installation. They are similar to the image below.
  3. Just to close this thread. I eventually found this at Roco Fittings in JHB. Not the best but will work great and better than me drilling my own holes in a solid cap.
  4. Probably cost. Finding a DC circuit breaker that can handle that massive amount of current is costly. The choice is yours, all installations I see use fused battery connections.
  5. Yes, it's still available with the fuse.
  6. I am on my way there now. I only need two but it needs to be those small round ones.
  7. Thanks. Looks like I am going to have to buy a 'hole cover' or 'plug' and then drill my own holes. Not the most elegant but it will work.
  8. Looks like I am always looking for the difficult to find stuff. To finish up my controller enclosure I need two small ventilation caps. Does anyone have ideas where I can get something similar? 25mm or 32mm would be perfect. Like what I have here:
  9. My bank also went from an easy 4H30 Load Shedding session when new to a just barely making it with very careful load management after two years - but it still made the 4H30 sessions. I did have balancers which kept the batteries in better shape than would otherwise be. My initial choice was to go the cheaper LA, but still $$$, option until such time that LiFePO4 prices came down a bit and now is a good time for that. I upgraded to LiFePO4 two months ago and very happy. In short, I fear your batteries have had it if it can't deliver on your 4H requirement. Have them checked and tested just for your own peace of mind.
  10. I just did the exact same thing to my 24V garage motor backup just the other day. I replaced the two 12V 2.4AH batteries (similar size to 60mmx80mmx175mm I think) with 8S1P 32700 batteries in a staggered configuration. I bought a cheapie BMS, 20A perhaps, and it seems to work nicely. My next step is to get a BT BMS so I can monitor the cells remotely via my phone but before that I want to do a few Open|Close operations to see how many operations I can get before declaring this a success and leaving it in as a permanent replacement. My old batteries lasted 4 years (with a balancer) and they are still good. The LiFePo4 upgrade was just because I was bored over December Before installation one of the cells was slightly low but it took a few hours and they are all in perfect balance now. So, if you like to do small projects like this then go for it, just make sure the charge voltage is enough to balance the cells and not too high to have the BMS cut off the power. Check the datasheet.
  11. Thanks. I placed an order at Electromann, they are sortoff around the corner from me.
  12. Thanks @Gelo I see they do have them listed @ R6 each.
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