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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...

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

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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.

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...

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...

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...

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

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.

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 (...

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...

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...

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...

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...

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...

- 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...

To be honest, my fist assumption was you did something wrong. It wasn't untill I found the crappy Apexium manual to find out the mistakes you made were based on wrong information, and I don't think you can blame yourself for following a mfg manual. It's reasonable to assume a manual is...

By air?? Lol. As said, 320Ah does not exist. This weight by air = bloody expensive to ship And batteries usually are not even allowed by air due to safety reasons... I'm 95% sure its a fake. They will try to keep you waiting untill protection runs out, or provide false tracking 'dear friend...

Pretty common. If your unlucky ali denies claim, because tracking says delivered Seller says please contact postal office. If you are lucky aliexpress allows your claim, since this scam has become pretty common. But provide sufficient proof, like tracking, date, weight and so on which is...

Which batteries? 33V is very high and should be only occasional when you have a lead-acid and the charger is doing equalization (Which it shouldn't do very often) in all other cases it should be lower. With LFP it can be as high as 29.2V but it's usually recommend to have an absorbtion of...

As for the low temp charging: have a look at https://diysolarforum.com/threads/why-you-cannot-charge-lifepo4-below-0-degrees-celsius.2912/ @Dzl placed a screenshot from a Ganfeg datasheet regarding charging at low temps. (...

Yes, but you are limited in the current as well. PV input has limits for both voltage AND current. A MPPT works by tracking the maximium power point. This also can result in lowering the voltage to get a higher amps (20V x 5A is still more power than 40V / 2A).. thats the principe of a MPPT...

What do you think... 100 euro for 2 pieces 138Ah blade, including shipping? Aliexpress in general is a red flag for batteries. And yet still people are buying or even considering it.... Maybe people should do some research.. that would reduce the amount of people scammed by 99%, but...

Sounds nice, and I do think it will have a better efficiency due to the lack of transformers. However, it still does require mosfets or similar, unlike that link says. It's simply not possible to switch high-current DC using a H-bridge to AC otherwise, especially if you want to archive some...

Biggest power user by far is an inverter. If you're installing it directly on the cells, before the BMS, you aren't limited by the max current the BMS can provide, only limit is the cells discharge capability. And yes, you don't have any cell monitoring. The inverter has its own low-voltage...

The RSP versions are not suitable for charging. An empty LiFePO4 takes whatever current is available. Thus maxing out any powersupply: Hence the need for CC, (Constant Current) A normal powersupply, or a very basic one with a fuse, will stop working, or blow its output fuse, since the load is...

For B2B charging capabilities You need a DC-DC charger if you want to eg charge it with a leadacid car battery. If you have a smart alternator eg the battery voltage might be low, and not sufficient to charge the LFP properly. By using a stepup the 12V (or whatever it is) is boosted to 24V...

You need to stick with PWM if the panels don't provide sufficient voltage to drive a MPPT. Series-connecting on a PWM is useless. The efficiency of a PWM depends on the voltage difference. The higher the voltage above the batteries voltage, the more of the available power is unused. PWM doesn't...

Received my new 200A BMS today. Did some further testing concerning the charge/discharge/low-temp. - Discharge only: BMS registers load fine. With temp below the charge protection, nothing happens (as expected, since i'm not charging) - Charge only: BMS registers charge fine. With temp below...

On some models UPS you can adjust the voltages. If you can set float to 13.5V for a 12V setup, and the absorbtion is <14.6V you're good. Float >13.6V is not recommend as said already by others http://jelmerbruijn.nl/apc-ups-smart-ups-1500-battery-float-voltage-adjustment/...

Use a modern router (with modern LTE CAT, so it can benefit from carrier aggregation which does make a lot of sense in more rural areas). Also, use a good external antenna. For a mobile setup a omni, eg a Poynting Mimo. For a stationary setup a directional antenna is even better, that allows...

Skip that powersupply. Looks like a cheap chinese one, and generally I don't like their reliability. Instead, get yourself an old server PSU. Can be found for $15 on Ebay. Cheaper, much better quality, and more amps (a HP 700W PSU does 56A @ 12V, their 1200W models do up to 100A @ 12V)...

Make sure you check the settings. The Victrons (and many other charge controllers) do detect battery voltage only on first startup. That means: If you have initially tested it on a 24V bank (first power on) it will auto-detect 24V, and use that from that point. If you afterwards connect it to...

The inverter/charger might struggle with the generators output, especially if there is a rather high 'sudden' load. The generator requires some time to stabilize, but in the meantime the inverter might cut of the inverter due to out-of-range input (voltage, frequency) you can try to -...

Now they posted a new video, now directly regarding Ray This is just like getting a good series on Netflix... Basicly: The cells Ray got, are Luyuan cells. Those, according to SFK, which said he checked with Amy, can't fail capacity test, and the testing was wrong. According to SFK, Ray...

These high current diode's are pretty expensive. And you're going to need 4 of them. Expect to pay 25-30 euro / each, or 90-100 euro for a bridge rectifier. Better try to get some overstock ones, or salvage them from somewhere Also - They get hot.. VERY hot. You're going to need a massive...