Search results

The negative is off a cable going direct to chassis (not the starter battery terminal). As it’s a motorhome the D+ comes from the EBL. It‘s working fine. We‘ve connected positive to various places, piggy-backing on existing fuses and also directly from the unused 8mm bolt. Tried another cable...

We’ve revved the motor to around 2000RPM - no difference. We realise it could be that particular vehicle or a weak alternator, hence why we tried the 10A DC-DC (exact same result).

Not as low as that. It is dropping but not so much. We’ve connected a 2nd cable just in case the cable was too thin, connected to different bolt on + terminal, still same.

No, it's dipping down but not as low as that. It looks as if the voltage drop is over the 1.2m cable to the DC-DC, but 16mm should be more than ample and we've done loads of other installs using 16mm cable without problem.

Hoping someone can help here, perhaps having had the same issue with the same or similar vehicle. We installed a Victron 12v 30A DC-DC non-isolated charger into a motorhome built on a 2022 Peugeot Boxer with smart alternator. We’ve installed many DC-DC chargers, quite a few on vehicles with...

Using the assistants you can control various aspects, such as when to charge batteries from the grid and the choice of using battery vs grid etc. But he’d rather control things from his inverter.

Hi folks A request for info from someone, and I’m unsure of the answer as I’ve never tried it. He wants to control two batteries with JK BMS using the same Can Bus. He wants the inverter to control various things. I would have suggested a Multiplus but he wants to go a different route. Anyone...

We put the KG140F through it's paces in this review: On the whole I quite like the KG140F. I had both Victron and KG140F installed and over a week of touring I used them both quite extensively. Because we use quite a bit of power I like to know the real SOC at any one time. In this review I...

Agree that’s the theory. Actual tests that we conducted show that the theory doesn’t hold water in this particular case. It’s a classic case of gut intuition (or theories) conflicting with the data. The data says that the smaller surface area isn’t an issue (probably because you can apply a...

I did some stress tests on the welded studs and they came out tops, here is the thread: https://diysolarforum.com/threads/review-of-capacity-and-terminal-temperature-cells-from-shenzhen-luyuan-amy-wan.22371/

It’s pretty easy to re-program the shunt to connect to a different display. Easiest is to plug the new display into the shunt usb and the go to the ADR menu option.

That’s what I was hoping (in vain) for.

No, original seller not interested.

Except that the OP (that would be me) specifically asked the seller if there was a mistake. The seller made it very clear that ALL the cells tested out at 420ah. We asked for test results, we were assured that they would all be 420ah. Other people have experienced the same. How on earth can you...

We have another dispute that we have taken to our CC provider. It's for Juntek shunts (Juntek shunts) We lost the dispute on Alibaba arbitration, so hoping Barclays CC will refund us as we have a box of 20 shunts that are not fit for purpose.

We didn't bother explaining because both the seller and AliExpress know the costs. And I agree right is right, but this seems to be the price for doing business with AliExpress and Alibaba. It shouldn't be but it is!

Our account was credited in full, but we had to ship the cells back at our expense. The direct monetary cost to us for this "experiment" was around £100. I'd not include time wasted because it was "educational" and interesting. We've found that the banks (credit card companies) want to know if...

I had a good look for software versions but didn't find any.

We bought two identical shunts from the same supplier: one in March and the other in September. The earlier purchase is fine, the latest not. Maybe they sold from new stock in March and from old stock in September - but not likely.

We bought a Juntek VAT1200 (200A) in march from AliExpress and really liked it - and yes it displays opposite to Victron and other shunts but I can live with that. We bought 20 VAT1050 (50A) shunts off Alibaba and they're also really good. We then bought 20 VAT1200 (200A) shunts off a different...

Can you see a software version anywhere? I'll check when I'm back at my test rig. I'm wondering if the 100A you bought is older stock before they introduced the change/error. It's their way of doing it Guess, but I prefer the Victron shunt which shows minus out of the battery and plus into the...

Does the below make sense? It's based on the widely accepted "fact" that you always put more back into the battery than you took out to get back to 100% SOC. Unless you manually reset each cycle it will become worse and worse. In this case a cumulative 2.5% error. After cycle 40 the shunt will...

It is possible to manually reset, but why should we have to? In previous models of the exact same shunt it would count DOWN the AH drawn until it reached zero. Then it would stop. The zero was reached when the battery was very close to 100% SOC. The little bit of "extra" charge that went into...

Nope. We asked for clarification.

Blatant lies. How many of their customers have the capability to capacity test? Probably around 1 in 4? If so, 3/4 of their sales will not be returned. The math works for them, but wondering how well they sleep.

The thing is that it's not. When I last tested a full cycle on 240Ah cells, it had reached -7.5Ah drawn. That's around 3% of the SOC When I began discharging it counted the AH drawn until it reached zero. At that time the SOC display showed 100% when in fact we'd drawn 3% of the batteries...

That would mean you have to zero it after each cycle, otherwise it would keep going further and further out of sync. I find with all of these shunts after a full cycle (start at 100% SOC, discharge, charge back to 100% SOC) the shunt always seems to show that you put a little more back in than...

Did you also buy from Shop910787018 Store?

I have both the Victron Smartshunt as well as several Juntek smart shunts. The Victron is some cool kit, very accurate and works well. At a fraction of the price, the Junteks were great too. No Bluetooth app but you could mount the wireless display anywhere in your van where it would make most...

We raised a dispute with AliExpress who have said that we will be refunded 100% but will need to return the cells to the seller (at our expense). Essentially this whole "experiment" is going to cost us around £100 in return shipping fees. Our credit card company may or may not have clawed the...

We tested our "420ah" cells at 240ah. So less than 60% of stated capacity. We've done four tests - same results. Two different smartshunts and four testers.

We ran a capacity test using two testers and a Victron smartshunt. Each tester came out at 120ah (so 240ah combined), the Victron came out at 239.6ah I'm guessing they may not argue with those results ...

Covered in another thread, we recently took delivery of and tested capacity for cells sold as 420ah. The cells in question tested out at 242-244ah, so basically less than 60% of stated capacity. This is the thread: 420ah Cells We're now beginning the process of obtaining a refund. We're trying...

So the cells finally arrived, nearly three months after ordering. We were 99.9999% they could not be 420ah (we did have our eyes open so please comment appropriately), but curiosity won. The question was really: How (good or) bad are the cells? Individual cells came out at: 242ah 244ah 242ah...

....or make a few flexible busbars using cable?