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  • Post in thread: [FIXED] Careful if you ordered Apexium DIY Box (melted fuse cover)

    What was the load pulled from/to the batteries? And were they nuts torqued to spec? The images shown heat, especially at the input side of the fuse holder. That only occurs if there is resistance, commonly caused by not properly torquing or bad crimps. In this case there are no crimps, so that...
  • Post in thread: JBD 4S 200A BMS

    I've made some mounts for the BMS. Just printed 4 of those. There is approx 5mm space below the BMS to allow for ventilation and the nut on the busbars to fit properly. https://www.thingiverse.com/thing:5222663
  • Post in thread: Lithium Battery Pack EXPLOSION Caught on Camera!!

    One of the reasons why I prefer LiFePO4. Also one of the reasons why I don't recommend some 'solar generators' like a Jackery. I just don't want these chemistries in my van. However they are becoming more popular, since their marketing is doing a great job... But from a...
  • Post in thread: JBD 4S 200A BMS

    I also have one. There is no heater option in the app, at least not on the IOS version. I did some testing with mine (SP04S03A Partno 16240017), with the heater terminal connected (screw connector), just as the picture from @RV Truck Camper I have set the charge under temp to 3, release at 5...
  • Post in thread: Can I use a relay to increase the amp rating of an Overkill Solar BMS?

    How do you power on your inverter? Generally with a switch. I’ve connected my inverter directly to the cells, bypassing the BMS. Only serie wired it with a fuse and my shunt. What I did was replace the switch in the inverter with a very small relay. Draws only a few ma. The switch now controls...
  • Post in thread: [FIXED] Careful if you ordered Apexium DIY Box (melted fuse cover)

    Couldn't resist looking into the manual and I agree with the note from @Lt.Dan about the terminals. The manual is, imho, wrong here. To me, the busbars should make direct contact to the terminals busbar, and the current should NOT be passing the (fixed) nut. That nut/thread is only to secure...
  • Post in thread: Smart shunts potentially dangerous!!!

    Thats why there is (/should) be a fuse close to the battery. Victron Smartshunts come with 2 fused leads for these purposes. There is no danger, first a short shouldn't occur when properly designed and installed (wire shouldn't come loose by accident) and even if it did, wire/fuses should be...
  • Post in thread: JBD 4S 200A BMS

    For anyone interested, JiaBaiDa has now also released a 300A version, the SP04S060. This one includes RS485, CAN and a heater port. It also comes with 3 M6 threads for both input and output (unlike the single M6 busbar-style on the 200A version) Off course it's bigger than the 200A version...
  • Post in thread: Charging a DIY battery from EV charger

    EV Type2 is just plain 240V, either single or 3 phase, AC charging. DC charging is a whole different game (And a lot more difficult to DIY) Here in NL, those EV charging poles are available about everywhere. I think there are about 80.000 or so installed, not counting private ones and ones on...
  • Post in thread: 12V 560Ah LF280 Campervan under Front Seat Battery Pack

    Very nice case! However, I do have my doubts about the 250A fuse used. I've seen people complaining about its construction quality. Also, I doubt if its able to do its job properly. All fuses have 2 ratings: Its fusing capacity (250A in this case) but as important id its interrupting rating...
  • Post in thread: Chins BMS possibly the issue?

    Agree with the breaker Bypass that one for testing purposes. I still don't get why people would install those automatic breakers. Just use a fuse. A breaker is fine for a house switchboard, where you will occassionally overload/trip a breaker and want a fast way to reset. In battery setups...
  • Post in thread: This is why all circuits should be fused

  • Post in thread: New calb cells came without screw holes!

    No, but offsite images are less reliable. Lots of hosts expire their uploaded images rather shortly, randomly stop, hosting is cancelled by user and so on. Beeing able to host within the forum gives much more reliable hosting, expecially if someone is looking for resources and finds some older...
  • Post in thread: Copper or Tinned Coppers Lugs for Tinned Copper Bus Bar

    Tinned copper for the lugs. For the wire it doesnt matter. Primary reason for tinned vs bare copper is to reduce the chance of oxidation. Copper, when exposed to the elements, will oxidize (turn green, hence the green rooftops). In a wire its protected by the insulation. On a busbar it's...
  • Post in thread: Local Pittsburgh Solar Battery Fire

    Could be cylindrical cells as well. On there is an image showing 1 battery slightly more intact, but I can't read the label. The original linked article is unavailable for me due to some regio lock. To mee this looks like simpliphi which appears to be LiFePO4...
  • Post in thread: Fuse holder nut was glowing RED!

    Thats why a flir is still on my wish list. Run at max load for 30-60min, and check with the thermal camera. It will also spot bad crimps and so on.
  • Post in thread: TBD SmartShunt

    There is almost nothing to find regarding this unit. Not in general, let alone any information about the UART port. I think youre probably have to figure it out yourself. Can't even find the vendors page First step would be figuring out if its RS232 or TTL level and test to see if it's RS232...
  • Post in thread: Xuba Electronics: DEAL - 280AH LiFePo4 cells. Purchase & Review

    Why do you put a refund request in? I don't think its fair to blame Xuba (or any other seller) for issues with a specific boat. This does occur sometimes unfortunately. This is also one of the risk when buying directly from China. It doesn't affect you moneywise, it's insured and you will get...
  • Post in thread: JBD 4S 200A BMS

    And also 0c is not a 'from there you can go full speed'. Max allowed charge current is not allowed till approx 25 celcius or so, depending on the SOC. Ganfeng has a nice table in their sheet https://diysolarforum.com/resources/ganfeng-100ah-datasheet.138/ As you can see, at eg +10 celcius...
  • Post in thread: custom made battery box for eve LF280K cells

    By the looks it of the connector you might be able to replace it with a generic M6 terminal https://nl.aliexpress.com/item/1005004075343261.html
  • Post in thread: Securing JDB Bluetooth

    You can glue a simple reed switch (normally open) in series with the + wire and glue it somewhere (marked) on the case. If you need BT, just put a magnet next to it to enable the BT module. Remove magnet once you're done and the BT module has no power. No need for any hole in the case.
  • Post in thread: Crazy low prices on Aliexpress LifePO4 320A, with buyer protection?

    PostNL is pretty similar to something like the USPS in the USA. They do international, but mostly under the TNT Post names in Europe , and afaik not in US. For shippings from CN to USA it doesn't make sense at all.... since both of them are not their markets (...
  • Post in thread: BMS for a 12v system with 2 Victron 12/3000 multiplus in parallel

    On a 12V system I won't go over 2000W, 3000W only for short periods. Especially with 6kW 12V makes it near impossible to do properly. 500+A is a PITA to handle. Any crimp with the slightest resistance will cause issues when pulling this amount of power. Go for 24V or preferable 48V if your...
  • Post in thread: JBD 4S 200A BMS

    By the label '60 c' and the layout I'm 99.9 sure they are thermal fuses. Example of one: https://nl.rs-online.com/web/p/thermal-fuses/1769104 Those automaticly reset and will provide additional temperature protection in case of overheating. You can connect them to the on/off switch (and enable...
  • Post in thread: Fridge kicks off inverter

    Inverter should be able to handle it fine. What error message shows the inverter? Overload or low battery? If the wires are too thin, or connections are crap, inverter might shutdown due to low voltage, even if the inverter itself can handle it fine. Voltage drop over cables (or bad connections...
  • Post in thread: Sooo... its 12F outside, my power is out until tomorrow night...

    Yeah, its rather different depending on the country. Also, the available connections to the grid are different for each country. Here in NL we used to have 1x25A (single phase 230V) with an oldschool meltable fuse. That got upgraded to 35A, and somewhere in the 90's became 40A with a breaker...
  • Post in thread: New calb cells came without screw holes!

    That could have been me or someone else purchasing these cells. One always believes the cell terminals will come tapped....until now. I don't recall anything like this happening before. Agree. This is a rather new 'development'. EVE was the most used here, which came with threads. Lishen...
  • Post in thread: Lishen Battery/Solar build

    - Generally cables provided are crap. Replace them with some decent wires - Most 'cheap' power supplies aren't designed to run at max load for longer periods. On a 10A powersupply I would suggest not exceeding 8A I'd personally would suggest getting some terminal lugs and crimp them, both on...
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