JTK

Plonkster.. The Victron.. how will it blend? Can I connect part load in the middle? Perhaps 3KW is fine if it will operate as grid tied?

is this not perhaps settings related?

SO lets say I can get to the lithium settings on my growatt.. who will sell me a lithium battery with a warantee in tact?

lol up and down arrows... 3 digits will take while to run through 999 options. will try some obvious ones

lol! yes agree on that one. Trick is not to warm up the water long before you use it. That way you have to warm it up again and again.. Warm it up once. then dont warm any new water that flows into the geyser whiles you use it. Then warm it again before you need it turning off before you use.. It does save. But I agree. it isnt thousands. Mine was little to start off with :d

This is exactly that. It is turned on for an hour before we use the water. then stays off until next cycle. I do understand a bit of temperature dynamics

The growatt has a lithium profile but I cant get into it. It has a 3 digit password. I have asked the local growatt support for help but that is not forth coming. Just "you cant use the growatt with lithium". Which is bollocks, to be honest. The profile is there it just has a password preventing accidental access and I cant get to china support if I am not a dealer. So if anyone can assist with the password . Also a firmware update might solve the issue... I do believe they have a better later firmware but again I am stuck. ps: 3kw may be too little unless I can run the meter backwards...

I agree on the 2kwh loss but I usually run it on a timer for an hour at a time. Which would negate the loss. One hour heating is enough to heat the 55l geyser.. Sure the mathc dont make sense but it works.. yes. spinning the meter backwards...

agreed. but if I could push back into the grid I will cover that portion right? Lets say my grid can push out around 2.2kwh for say 6 hours every day... Then I should cache the 3kwh it takes to heat the geyser once? Or am I missing something?

CE certificate (which is a self-certification thing). a little different to this.. have to conform to certain ISO standards... Will allow you to sell in europe

true. but my 3kw geyser, microwave and iron run off mains at the moment. Probably costing me around R1k-1.2k a month. So the inverter should pay for itself in 12 months.. And I will get half the spend back from the growatt

thats no good! I pull around 8kwh through the night by the looks of it.. So economies of scale suggest that 3 pylontech 3000's will be cheaper than a lead acid bank as well?

My Growatt is a off the grid box and cant be tied (unless there is a way I dont know about?) So I do end up losing a lot... Question is if anyone will sell me a lithium battery which will keep its warantee if I stick with my growatt? How much realistically would the Rolls set me back? the infini 4k can be had for around 14k now?

My issue is constant international travel. I dont want to saddle the wife with having to keep an eye on the batteries. Hence the idea to go to Lithium.

Hi All, how I wish I knew about this forum before last night I am fairly new to solar. Have some knowledge but not as much as the pool on here. I have an existing setup but wan tto change the batteries. 12x330w Canadian solar Growatt SPF5000 (off grid) Batteries - lets not go there... So I proceeded to want to put a few lithium batteries on the system. However everyone I speak to says to me that pylontech batteries ( I was looking at 3x 3.4KW) are not compatible with the inverter and cannot be used.. I dont agree but dont want to buy a battery that wont be waranteed. I assume the issue is actually that I cannot current limit the Growatt and that this may cause premature failure t the battery it continues current is higher than what they want you to draw to keep the proposed battery life. They all say it is because of the communications protocol. Which should not be an issue as the battery charges itself right? The Pylontech have a BMS built in which handles the charging as long as it has voltage and current? Or am I missing something? Anyways. Long story short. I am deciding to rather then get an Axpert Infini 48v4k. I know from reading that Axperts are not the rolls of inverters but I dont have the rolls money at this point after I what I will be paying for batteries... btw I still have an old disk based power meter. My thought thus is to place some of my load between my inverter and eskom(geyser) and some behind the inverter (everything else - kettle on the stove which is gas). Grid tie it the inverter like that? That way the inverter can feed the geyser and Eskom can feed what the inverter lacks? Is this a good idea? Reason for this is that I dont want to hang the geyser off the battery bank/inverter but still want to get benefit of the panels for the geyser. Will this work? And if I am lucky perhaps the meter will play along as well for the reverse feed excess netting off in the end? Proposed setup then.. 1. ultimately 18panels 2. Axpert 4k 3. 3 x pylontech 3.4k's Do if you guys think my setup is a good idea? Any other suggestions that would be cost effective? Thanks in advance for the feedback!