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Anybody else have any experience with the board above.?

I have tried chargery on a 48 volt system and it was not accurate.. I would say stay away from chargery for 48 volt till they get their act together.. do some searches on this forum. Noenegdod. Very nice, do you have any separate independent breakers Incase the victron fails in an undesirable...

https://www.ebay.com/itm/254647610560 Yeah, well removing the shunt is better but since you were talking about recalibrating the bms I figured you had not thought about changing the shunt. And it your response you mentioned that you needed to use a large current bms in case you could not...

Timely subject, I am interested in a similar approach. Why would you not be able to work with an external shunt in parallel with the internal one? Wonder how fast the reset time is of the current limiting circuit. Does the bms recover from an overload current after a couple of seconds or do you...

Without to much problem I was able to ohm out that each transformer has two out of three coils directly connected to the two MOSFETs and to one of the pins on the white connector.. so that would support the theory that each of them is powered by one cell. The opto would take care of the voltage...

I was curious about this 4 cell active balancer board. It has 4 transformers so it seems to be a stack balancer transforming the cell voltage back to the overall assembly voltage. Tested a slightly unbalanced 280 ah 4 cell pack and it seems to work, some voltage came down and others went up. So...

In my converted city bus we have a 24 Volt system.. there are 4 identical groups of solar panels each with there own tracer / epever / 1210rn. 10 Amp mppt control with a mt5 remote readout. I like the redundancy of several charge controllers and indeed we had one unit damaged several years...

So I kind of forgot to follow up.. yes the parts did the trick and the charge controller is working again. I did some experimenting to use these as lifephosphate. See my new thread. Tracer 1210 voltage modification for lithium. Johan

Location Pennsylvania pa16801

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Thank you. Johan

The bms used is the original bms from the Nissan leaf.. the charger is set for constant current of 5 amp and a shutoff voltage at 4.0 volt / cell. The cells are normally matched very very well. The bms was more used with the leaf spy software to see individual voltage differences and also...

It is all good, I just wanted to document no need to make it smart.. will take the post down to avoid the smug , smartness and hostility. Images removed. Text removed..

No kaboom, just some swelling,.

Was lucky.....original images and post edited to delete content as to avoid a useless unrelated discussion. Bms was working, charger failed to shut off, pack was partially used so some cells were not charged.

With cuba there was some bargaining ..did we not remove stuff from turkey? Wonder how turkey reacted on that in those days..

I have met people that lost larger 300 watt solar panels because of windgust while driving.. glass got sucked out of the frame . Some people have put deflectors up to prevent wind getting under the panels.... That of course is not great for cooling.. personally I would not go larger then 250...

You might have a small airleak in one of the fuel lines. How long do you need to crank it manually..

This whole thread reminds me of covid ivermectin and the jab. I am glad that we still are still allowed to buy a non ul certified inverter. Half of the medicines I can get only in Mexico.

It is most amusing that the experts from different parts of the world have come up with different and opposite ideas regarding grounding that both lead to safe solutions.. J

Yes I understand but I do not see the advantage, you need a structure, it needs heat for your battery, if a breaker goes off you have to walk all the way out there. But that is all for you to consider.

Micro grid tie does work fine when you create your own stable grid with an inverter. There are some complications but research here at diy solar and or outback solar forum and you will find the answer.. Essential the complication arises when the micro grid solar inverters put more power out...

Ok, I am catching up together with your heat pump in your other thread,. Why not get multiple micro gridtie inverters and run 240vac for the long runs to your house...redundancy . then have a battery bank with quality inverter generate a local grid that complies with the requirements of the...

Slinky has more surface area per cubic yard of soil.. so if it sucks more heat out of the soil then can be replenished it will freeze up.. that is why I mean with experts.. I am sure they had a whole bunch of experts that did not see that coming... But alas, we learn from other people's...

Nice project, not sure I would try that in that environment but.. We are in Pa, completely different animal and we use a sanden CO2 air to water heatpump , normally for domestic hot water but we use it for our radiant heating... 3/4 pex under two layers of hardwood floor. We have a 52 x36 shop...

One more thing depending how the windmill is wired.. star or delta...you might be able to reconnect to star for higher voltage.

My own projects involve scrapyards, fleabay, university salvage.. if you go a pro route with this then it will cost a lot of money... No doubt salvage aluminum entrance wire will be the cheapest. Good luck. Johan

Why not take small 3 phase transformers and bring the voltage up to 240 volt 3 phase or higher if you dare.. then rectify each of them at the windmill or in the house .. now you can parallel them at high voltage DC . Use mppt if you feel it is efficient.. Or rewind the windmills for higher...

Unfortunately from three of the six cells the cases are corroded thru. The pouches are visible. Sorry if my fotgraphy is not up to that detail.. Of course I will try to save these cells but with high internal pressures and the damage at the corners rupture would be possible My warning to...

With kuranaga's comments in mind, I did some more test with aluminum foil in the same liquid that these batteries were exposed to...left it in / on there for two weeks ...and nothing happened. Aluminum foil became less shiny and dirty looking.. no holes ..still foil. So I do not think that the...

Check the pictures .thanks..insulation is there

Yes 25 watt at 12 volt. I will set then up , two in series so it will go down to 6.25 watt per element.. I liked the size ... Nice spread out over a larger area

I have a feeling that the voltage differential between the casings gave it some help

Here some pics of a small scale project..I need to be able to heat these as it is going to be under my bus.

New lishen 272Ah cells 20% charged in 16 cell series on double cardboard in basement..no connection to anything else. Bad luck caused the dishwasher to release some gray water in the basement. A little soaked up in the cardboard. Did not think much about it. Two days later I noticed a bubble...