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Hey, i have a grid tie inverter with solar panels. It will shut down on blackout as it should to prevent electrical hazard. But when we have a blackout it's worthlessWould it be possible to use a simple, battery driven,small poweroff grid inverter in case of blackout to "activate" our grid tie...

Hello, i have this cccv module from china: https://www.qskj.cc/shop/product/1941713-dc-dc-converter-1200w-20a-cc-cv-step-up-power-supply-module-qs-4884cccv-1200w-79174 I think it's very common. There are trimmer potentiometers to adjust the voltage and the current.Unfortunately the central ic is...

Hey, before soldering a parallel pack together (wire cell levelfuses) should I: 1. discharge all to maybe 3v (much work because my cells are stored at about 4v after testing)? 2. not discharge but keep the voltage difference within max 0.2v that means max 2A for a very short timewhen internal...

Hey, it seems like you made a lot of thoughts about this before you built it. The only thing i wouldnt like is not t o be able to see the cells quickly, especially the lower story/floor of your box. Which BMS is that?

Hey, for my project i want to use my battery only to store the energy from my solar panelsi do not use that moment. Especially at noon. So i measure my solar input and my total input from the grid. To have something like a controlled charging that switches to higher charge powers on need i want...

For one of my projects ill need 500w charging minimum. I think i could use 2 of these in parallel. Or is there some other option in that price range?

I have one of...

I just measured the steel with my slide gauge. 2mm! Thats quite fat i guess.

Im not sure if we have something like this here because we don't usually have wood frame constructed houses here. And hmmm. charging only when i am there wouldn't be an option on a powerwall :huh:

I found an old, very sturdy, steel metal cabinet on ebay. Sanded off some rustand put some nice finish on it. It is big enough to keep my planned small powerwall (only for excess power) of about 1kwheasylyin it. I think the steel is somewhere between 0.5m an 1mmthick (will measure it later)...

27kw? Just... why? I run a 400sqm house with 10 people for a 5 days with that haha. Is that still called camping? :-) What do you want to run with that? And... wouldn't it be easier to use solar panels and / or grid power to charge it?

Yes, wanted to build it 24V or 48V Thats cool, i didnt know they have an adjustable input voltage (low voltage protection). Thank you! And also all others for their good hints![/hr]

Hello, i am building a portable LiIonbattery for my van (simple diy camping build). I want to build it into a tool box to make it portable. I already have a MPT 7210a charger that will be inside the toolboxand i would like to be able to charge the battery without solar panelwhile i am driving...

thats a good answer to my question. The empty spaces method and the method shown in the video are what i was looking for.

Hey, i saw many styles of configuration of 18650 packs and i like the idea to make bus bars from installation cablecopper and connect the strands to larger busses to the connectors. What i wonder is how you build packs so that you can replace a single cell (maybe when it gets warm) without...