looong time no post. I have been lurking and designing the chassis for my build and it has taken a long time to land for me as I want to be able to quickly service my modules (P120) and not have to solder or cut anything to do so. props to another forum member AJW22 here for their STL...
I am developing my connection concept and instead of using copper bus bars looking to create nickel sheets with sprung connection/fusepunchedinto them. I need some sheeting to test my concept and so...
My question is where is best to by sheets of Nickel? aliexpress?
i need them 350 by 135...
I have just purchased some charger units for a bit of an experiment and turns out they use a USB plug in and give a 'full' charge as indicated by a green LED.
I then threw them in the opus once charged and they came up with a voltageof 4.3v on each cell!
What are peoples...
As I plan the design of my setup I am seeing people mix the different capacity cells to build packs. It looks like they are aiming for some consistency across the board though...
Ie they are adding up the overall capacity of 100 cells and trying to match them with the other 14 to be similar...
Ok so more than a few of my cells I am pulling out have freaked out my meter and show 10-40v???!!!
I have throw them in the cell cell bin to be safe.
They dont register on my lab unit or my opus to charge.
Does anyone know what is happening that this value would be displayed?
Have browsed around and seen differing thoughts on heaters.
I have only so far had one cell that forced the OPUS to stop discharge due to heat. It got hot alright and noticibly hotter than the rest of the cells I have been processing. I could still hold my fingers on it but must...
So i see if you reverse the polarity of the cell it destroys the chip.
Isthere another option to protect from this? an updated chip?
Just about to buy a bunch and build a charger running of an old PSU and before I do I want to line it up right.
My dining room table has been taken over and this is just the begining! yikes.
I have a seriously big hill to climb to get to 7500 good cells.
Dented batteries? whats the consensus? i have kept them out as precaution and in a ceramic dish.
CELLS CELLS CELLS!My free supply of...
Looking to speed up cell processing and after a link on a how to build one of the bulk charging units using the tp4056 chips... anyone able to point me to a three or link?
Or better yet, has anyone got one they are finished with and want to sell?
Any help appreciated.
I am after somwhere between 40-60kwh for my pack (aiming for the moon) and after some recomendation on the size of the banks.
have a solax 5kw inverter and charger. seems 14s is the way for a 48v system but what is the advantages/disadvantages of 100P vs 80P vs 150P??
keen on your...
I have seen and read alot but nothing has prepared me for just how much time and attention you have to put into this cell processing game!!!
Much respect to those that have gone before us!
I am running three of the opus machines and will clearly need another three asap. After reading...
Just beginning my processing of cells and am thoughtful the tthe project may take up to a year to complete. With this in mind shouldnt I store the good cells around 60% SOC?
If so does the opus have this feature?
So I am trying to do this power wall build as safely and clean as possible but also want to keep costs down.
So I currently have 400 cells to process with thousands more on route. To capacity test these I have purchased three opus chargers but now looking at one of the imax units.
I am from Pegasus a small town north of Christchurch New Zealand.
I have been watching and reading and learning about energy storage for about 3 years.
I have a 9KW solar panel setup 12kwh of lead carbon storage (which is great) and two electric cars (both Nissan Leaf) our family...