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How much actual lithium (or more correctly, lithium monohydrate - LiOH, aka lithium hydroxide) is used to make an LiFePO4 battery? The cost a year ago for LiOH was over $80/tonne and now it is down to about $22/tonne. The product is now traded on the London Metal Exchange (as of this past May)...

I have a 12K grid tied selling nothing back to the grid with 8 SOK 100ah batteries. The 'shutdown' is set to 20%. The 'Low bat' is set to 20% and the 'restart' is set to 25%. I previously had 5 batteries in a stack and added 3 more a couple of months ago. The batteries are linked together as...

Not sure what is going on with my 12K. We have had some bigh usage combined with a rainy, cloudy day so my SOC has drobbed well below 20%. The min SOC is supposed to be set so it switches to grid when the SOC goes below 20% bit it is not. What is wrong with my settings?. I have 8x100ah SOK...

Not sure what is going on with my 12K. We have had some bigh usage combined with a rainy, cloudy day so my SOC has drobbed well below 20%. The min SOC is supposed to be set so it switches to grid when the SOC goes below 20% bit it is not. What is wrong with my settings?. I have 8x100ah SOK...

I installed 3, 12,000 btu solar mini splits supplied by HotSpot Energy in 2017. These were DC units supplied by 3, solar panels each and would pull AC when solar not available. These were intalled in a beachhouse in the Bahamas. The interior units (evaporators) were mounted in the ceiling (as...

I currently have a 12.5 kw array feeding a grid tied Sol Ark 12K. My system is ok for the winter months but won’t generate quite enough for the summer months. I need another 2-4 kw. I cannot AC couple because my utility does not permit power to go back to the grid. I have installed a...

Is there a good way to use microinverters with a S5 PV kits on a standing seam roof (no rails)? Can a microinverter be mounted directly to the solar panel?

I currently have a grid tied 12k with a 32 kw of panels (south facing roof) into the two MPPT's and 25 kwh of LFP batteries. I want to add some additional panels (east and west roof) using micro inverters. The current 12k manual shows (I think) two ways of doing this. The first (pg 9) is a...

I am having a hard time finding anything out about the 'batt restart' setting in my Sol-Ark 12k. What does this setting do? The default is 50% and I have turned it down to 30% but it dies not seem to make any difference that I can tell. I have 5 x 100 ah SOK batteries connected and have the...

Basics -vacation rental house located about 250 miles due east of Miami (Bahamas) on a beach, in hurricane zone -typical electricity rate is $0.50 -$0.60 /kwh with monthly bills running between $300 in January up to $1200 in summer -5 tons of AC {5 ductless splits), electric stove & dryer...

I have just commissioned my Sol-Ark 12K (32kw panels, 5 X 100ah SOK batteries). You are supposed to install a set of toroids around that DC input cables from the battery. However, I just noticed that I missed doing that. I will install but I am curious as to what their purpose is and I cannot...

Has anyone tried the DC water heater element supplied by Missouri Wind and Solar for domestic hot water supply? The elements have a thermostat, so you don't have to worry about over pressurizing/overheating things and they have DC rated contacts so you don't have to worry about burning the...

I am trying to decide which solar panels to use. Almost all the reviews I see out there either proprietary (ie 'I rate these panels highly and I can sell them to you') or somewhat contradictory. I have a decent south and west facing roof with very little shade about 200 miles due east of Miami...

Would it be possible to DY something that would be similar to the Fortress Power 18KwH eVault using something like the the Fortune 100 Ah batteries? https://www.fortresspower.com/lithium-iron-phosphate-battery/