New Product Peek
Vložit
- čas přidán 3. 12. 2023
- A quick look at some new items I've bought on eBay and Aliexpress.
www.aliexpress.com/item/10050...
www.aliexpress.com/item/10050...
www.aliexpress.com/item/10050...
www.aliexpress.com/item/10050...
www.aliexpress.com/item/10050...
www.aliexpress.com/item/10050...
www.ebay.co.uk/itm/305094832166
www.ebay.co.uk/itm/155711905976 - Věda a technologie
One thing about those starter relays is they're only designed for very short term use (ie just long enough to crank over an engine). You'll want to thoroughly endurance test it under load before relying on it.
Very true. Starter relays can't handle continuous operation. If you get golf cart solenoids, they are rated for continuous duty and work very well.
Also out of experience running a 12v inverter through one of these is there is a heavy coil current while energised and so I would advise to solder a flyback diode between the coil terminals to protect the control device.
@@MindMeetMakerAgree. I control an inverter via a 200A relay, eBay special, I too soldered in a flyback diode.
Haven't had any endurance issues with mine, but I only run mine at
I have a power supply that can give well over 500 Amps so one of these can be tested at full load and see what gets hot......
Hmm, endurance testing the relay will be fun. It might be OK in winter in the cryogenically-cooled environment that is my shed.
Looking very much forward to more sodium content, very excited that they are making there way out of the labs.
More sodium ion comming up, can't wait.
I think that cell was a sodium ion 46145 18ah
Spot on ;)
Sodium BMS too! (Maybe I should have waited to the end before commenting!)
Santy came early at your house… how exciting. I do like new projects (and never quite finishing them). Looking forward to see how this works out. 👍🏻
I look forward to the buck boost converter, will you be doing efficiency readouts too?
They're just buck converters. It should be quite easy to put one of the Wattmeters in front of the converter and one behind to test efficiency.
Interested in the XY6020L. Reports of it overshooting/undershooting the voltage when switching between CC/CV modes. Hoping maybe for a more recent software update might be sold now which fixes this behaviour.
That buck converter seems super handy, but i always wonder how to get 60v dc with good current to feed it
Looking forward to you demo'ing these
JK BMS switch is to turn the BMS on, the switch on the display and the separate switch on a wire are exact same thing, so you can use either of them. Without the switch, BMS would require some kind of specific voltage applied to turn it on, I don't remember exact details since the switch does the job.
I don't understand why a BMS has to be 'turned on'. I'm sure all will become clear when I play with it.
Interesting relief valve design 😅
I like solid state relays. Coil relays use a surprising amount of current, and get very hot as a result.
Looking forward to testing those goodies
Unfortunately the solid state relays aren't without their downsides, they will have a nontrivial resistance when "on" and thus can also get hot with high currents.
I wouldn’t mind you looking at all of those devices.
The JK bms is actually quite good, apart from trying to get it started, that is what the button is for.
You make it sound like an old car - difficult to get started :)
@@JulianIlett or a geriatric gentleman..
A cheap source of high amp relays are to get a starter solenoid for an old car at the auto store.
They can't run for extended periods.
if you have to ask a question like this you dont need the answer
They look very similar to the well known DPS5020 from Rui Deng i guess. Are these copies of it or are they Rui Deng? They work very well for me and are very efficient little Buck Convertes running on mosfet based rectifiers at the output side.
I'd love to see how good these coulomb meters are.
Yeah, particularly the CT type. Does it drift? Does it have to be zero'd out periodically? Is it affected by magnets?
Are you familiar with a six pin chip the DW01 ? its a protection chip. On ebay the 2S (cells) boards that are a couple of quid are using just one chip with a potential divider instead of using two and thats a 'fudge' as they are for one cell only it says so in the data sheet and they don't balance anything. I am starting a journey down a rabbit hole of Lithium batteries ! I accidently open a can and a load of worms shot out....cheers. oh yeah now I'm Battery Head I would like to see all of your meters please and I want to know everything about them LOL!
Hey Andy. 🧀
RIP Calculon.
Howdy Franko hopefully see you Wednesday!! RIP Calculon@@frankowalker4662
welcome down the sewer - heaps of misinformation floating around
the 500 amp one sucks, i had the 100 amp 12 volt version , and it had problems switching the load on.(few years ago)
Hi Julian. Sorry to use this video as an excuse to ask another question but, if I wanted to buy some solar panels for my garden, like you have, where is a good place to get them and what Wattage should I be looking at? I have two large car batteries I top up and an inverter but considering the likelihood of a grid failure, what sort of panel would I need to keep them topped up for charging phones and Dewalt batteries for lights etc
Big questions but any advice appreciated 🙏
Also, can we have more shed videos? Or are you waiting for warmer weather ?
Those questions are too open and too generic to be answered with specific numbers.
"Where" would be any retailer who has been around for a while and therefore can be expected to value their reputation (or if you're in the UK, almost any retailer since the law can cause them huge problems if their products don't perform according to both advertised and reasonable standards).
The total wattage of solar panels which is required depends mostly on how much wattage your solar charge controller can handle. So long as it can be set to handle charging lead-acid batteries, the wattage it can handle should be all you need to consider.
If you use a proper solar charge controller, it will handle the hard work of keeping the batteries topped up as long as there is sunlight. AFAIK, the charge controller also has an "output" connection which it will monitor to check that the batteries aren't being discharged too fast, and will cut off the output when the voltage gets too low (around 11 Volts I think).
The coulumb meter "H56C" with pickup coil is for AC currents and not for DC !
No , J screwed up by calling it a current transformer, its a dc magnet Hall Effect sensor - google it.
Thank You, Julian! Your videos are awesomely interesting and informative.
You have a Great Holiday Season! 🥰🤩🌲☃🎆🎉🎊🎈🏏
See You Next Video! 🙂
Thanks Jluca :)
Solid state relays with dc only switch on, not off IIRC but of course PRC labels are imaginative believe them at your cost, that m/c relay is only for a starter motor, not continuously rated nor suited for lipo battery use. I hope we get more technically precise otherwise it sounds like slapdash scattering of buzzwords (so prevalent in vids that waste our time). Keep up the good work Julian.
We need your skilled bench tech experience to expose the fake rubbish - so much of it out there
those are eco flow 20 amp 40c lfp cells ???
They're sodium ion :)
I don't think that is a current transformer since I don't think a CT works with DC. Some similar postings mention a hall effect sensor, so my guess is that is how it detects current.
Its possible to measure DC using a zero flux transformer, which are capable of very accurate current measurement of AC and DC by adding a feedback winding to the toridial core to create a zero flux state. The current through the feedback winding is related to the measured current by a known ratio.
@@camerontechstuffs Thanks for the info. This is why I never say things in absolute terms like "you're wrong, that has to be a hall effect sensor". You never know what you don't know... Now I can look up zero flux transformers and learn new stuff!
or waste your time @@wgm-en2gx
Those soild state relays, are useless without a heat sink like you say, I only ran 10Amps through the same one you have and it gets very hot.
NC = not connected?
That works.
Dinky lol