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Wow guys, this JST NSH https://www.jst-mfg.com/product/pdf/eng/eNSH.pdf is a nightmare. the whole 1.0mm pitch x6 is smaller than my pinkie and I would need special crimp tool to assemble a male wired plug. This is a serious issue against JK BMS cos any loss of connector cables means your BMS...

Can anyone identify the connectors used on the new black JK BMS, for the No3 LCD display 6pin 1mm pitch and carries a thin spade locator - NOT JST AFAIK. Mini JST SH 1.0mm Pitch Wire Connector SH 1mm.

The worst nightmare is fire on board afloat, and electrical connections are a serious culprit (especially if one is a bit slapdash about all that stuff - come on own up). PVC sheathed cable gets hard to handle as it ages (with heat) especially around machinery. Silicone cable is a much better...

Good User info JR. As you say a lot depends on the environment - and warm marine is the worst. Maybe a take away here (apart from your preferred grease) is that copper - elec connections need to be cataloged and inspected periodically YMMV on nautical locations. But then so much else afloat...

I had one of these, beast to start (typical poor spark from magneto). Lots of thump G3L and one of these BSA M21 600cc sv - easy starter (geared for sidecar outfits), ride around town in 3rd gear, cr 5.5:1 meant I could run it on paraffine oil - light heating oil) which was 1/5th cost of...

Silicone grease is what it is - insulator. WTF do we call it dielectric grease !!!!!!!!!! It sounds to me like some poisonous marketing mongrels decided to take a $ product and repackage it for $$$. Urban myth now is that its supposed to have conductive properties - like "copper grease" used...

do you mean a 250? thought they only made a 350 or 500 - big thumper and an ankle breaker to kick over

Yep JR that sums it up very well (dump the MC4s) I like the idea of sharing load current, split it into say 50% paths, dont go loading connectors to max. (eg 2 x 20A paths are more benign than 1 x 40A path - cos heat = I^2*R and the devil is in your contact resistance. I also like the idea of...

Right on bro - there is no doubt there are some very sound guidelines laid down in the site (even as a promo). Sadly Cheap Charlie has infected the whole domain of terminations from thin wall knock offs, crimp tools/anvils dont work giving very unreliable joints, poor quality heat shrink, and...

Btw @wattmatters great test work good science here. FWIW IIRR AGMs do not like large charging currents dumped into them > 0.1 C for 100 Ah - its a chemistry thing, also volts abov 14.4V gassing? So putting AGM//Lifepo you need to regulate charging to limit inflow to the AGM Also AGMs need...

Indeed I found these eventually. WOW they are an expensive solution as you need the $$$$ kit to crimp properly and the ferrules are $$$$, all special. I appreciate that a lot of engineering has gone into what seems at fist like a simple system.

Guys these are the standard "Lucas" pattern push fit connectors widely used in the auto industry for decades. However beware Chep Charlie, he makes these out of thinner metal so they dont maintain the spring force between blade and female socket.. Check your self to see the difference. In...

yes you are quite right. These arm chair speculators dont know Jack Schwepps. 14.4v is good for a Lifpo4 - 4s you dont lose much Ah<5% and its less stress on the cells = longer cycle life. You can take Lifepo down to 2.5V/cell = 10 V for 4S but thats a little low for AGM (only likes >50%DOD...

BougeRV supplier of fridges, solar panels etc for recreational vehicles MC4 style connectors - btw the staubli original was not designed for multiple matings as you say YMMV and these are only rated for 30Adc thnx

If only it were that simple Buddy, I wouldnt have made a heretical post. For a start Cheap Charlie floods market with counterfeit items that are thinner and inadequate to maintain grip force let alone perform cold welding, also many of the ordinary crimp pliers have poor quality anvils and...

I want to make custom long tails in place of the factory supplied MC4 (ie cut it off and joint a suitable length of cable down to my junction/marshalling cabinet). I am looking at 4mm and 6mm solar cables. Can anyone suggest a legitimate ferrule crimper system to make this straight joint. I...

Worth noting that the boaty crowd must have their craft signed off by ABYC inspector to get insurance. You dont get to dock without insurance, so all your electricals must be to the "CODE". Electrical fires/explosions are a common hazard - given marine setting and sea mist everywhere. I my...

Thanx for the heads up, that thought (what to do with excess ac in an island grid) occurred to me last night and fried my skull. Its notable that ac systems havent been adopted on Solar Farms (neither has Panel Solar tracking. They seem to favour, med 500Vdc strings and branch inverters...

Hi Guys Hope this is not a dumb question but AFAIK all the microinverters are of the grid-tie type and require connection to grid/main voltage so they can synchronize. Indeed if the mains trips then sync volts lost and the system shuts down (seems odd cant be right pls advise). My planned...

FWIW I investigated this Cabal of fuse making. It is after all a piece of wire and its there to protect the installation wiring. Over current surges of 5x can be tolerated in slo-blo cases (motor starters etc). Just consult the graphs showing I^2t values.. Much of the cost of a fuse is in...

@MattiFin sadly you have shown that you are under-informed on the matter. DC systems have used blade switches since 1920+. You can see evidence of this in railway electric traction switchboards (600Vdc 1000A), Electroplating, early telephone exchanges, UPS etc. However, and this is where your...

Not sure if this is the right Topic area, but here goes, if Im in the wrong place pls advise. My beef is about panel mounted micro inverters. But here seems to be hung up on connecting to the grid - not my concern. I am looking at the solar farm prospect where I have seen Flir aerial...

Indeed I have been banging on about this very concern. Such trivial attention is given to the design of the dc distribution system . Most have little idea of whats needed to break a full load current from an array of panels on a full sunny day. I got the collective yawn when I proposed old...

Ive got some 18650 SiBs in for testing from Hikadi (Alix). They are printed on case as 1500mAh. Hmm. I recently set up a newly acquired ZKE ap20 battery tester (so far seems a nice piece of kit with neat PC Win 10/11 s/w drawing nice compact graphs etc. It does a full automatic CC disch + CC...

Sorry its mind-crumble

High Solarnerds, have you had bad experiences with MC4 connectors? I got some recently from Alix - yes dont all jump on me here. It was for the purpose of examining what fake products were like (not for serious use OK). Looking closely at the basic design, its been carefully formulated...

The OP is for the purpose of sharing usage experience and generating informed opinion. Of course there is the often opposing view that ignorance is bliss and better to be uninformed and claim plausible deniability (a popular position adopted by polititions no doubt) Feel free to ignore the OP...

WOW I am so glad the OP raised this topic. It seems that a lot of DIY constructors are unaware of the consequences of a LiB going ape. Ive just seen an astonishing vid made from a conference of Fire safety professionals and presented by a a leading expert Professor of 20 + years studying the...

@Tulex Good news 4u 78 x .295 =5.33mm2 = 10AWG 105x .254 = 5.32mm2 = 10AWG 84x .285 = 5.36mm2 = 10AWG 10AWG = 5.26mm2 good spec.(y)

Well guys, I have opened up a can of worms here and rattled a few cages with dodgy dealers on EB. I suspect (correct me if Im wrong Cousins and Canadians), but you have some serious regulatory muscle to back you up if anyone is trying to sell you undersized solar cable and the EE has to sign off...

Indeed ok if you have welded studs. Lots of cells out there with threaded holes. His scattergun approach to testing is informative in some respects but frustrating in others when you are looking for an "real engineering" approach rather than "suck it and see" but I guess he needs drama to...

I have taken delivery of samples of TUV solar cables 6mm2. I was curious to know if these conformed to the specs. Correct me if I am wrong but we should have tinned Cu wire 0.3mm dia x 84 strands. This gives 5.94mm2 thats ok for 70A. The samples I got a) looked genuine printed on the...

Andy at https://www.youtube.com/@OffGridGarageAustralia/search?query=busbars had a lot of issues with busbars getting hot and studs becoming candles. I am fixing to do some lab tests on these jointing methods. There is such a lot of disinfo around this subject (eg conductive grease, Using...

Hi Guys, being annually retentive, I have been puzzling over making connections between prismatics, using typically aluminium busbar links. This seems to be a retro step given that you mechanically bolt a bar between two cells constraining movement given the tendency to swell during the usage...

What was the disaster you had that trashed your $6000 EVE batteries? is there a link please. OBTW this is the AMY link https://szluyuan.en.alibaba.com/contactinfo.html?spm=a2700.shop_index.88.25