Did you see his 'What frequency hurts the most?' video? Classic Mehdiand you can tell he's not faking it ... funniest guy on the net
Did you see his 'What frequency hurts the most?' video? Classic Mehdiand you can tell he's not faking it ... funniest guy on the net
Yes, CC. I know it will take some time... And there is a risk. As long as the batteries don't burn the house I'd be reasonably happyJust make sure you pay with a CREDIT CARD and if its not what its suppose to be open a complaint and you will be fine ... It should take you about 60-90 days to get the batteries ...keep us posted as the results ... I avoid Aliexpress and normally use Alibaba for several reasons but thats not important here ... good luck ..
Did you see his 'What frequency hurts the most?' video? Classic Mehdi
I was definitely a dumb kid - once tried to recreate a school experiment (electrolysis of water into Hydrogen and Oxygen) using wires stuck into a mains outlet ... woke up on the other side of the room
I'm sure most are planned as a part of his act, he sort of teaches using the adage you learn more through failure. Besides, otherwise it'd just be a boring U-tube electronics video. But I'm sure some of those are real too (e.g., I suspect when he shorted out his hotel room in the UK epsiode on converters and the UK having the safest power connectors was real... although I could be wrong). All the ones where there's a long pause (or he's filling deadspace talking) before something catches fire/explodes is definitely fake...he's just killing time waiting for it to happen. Same with reaching through live wires, that's the "I couldn't think of any other way to get shocked in this 5 minutes"....Does this guy just film all the time and make compilation videos of all his mistakes?...
Another quote came in:
for 4*152 Ah cells via sea shipping (35 days) = total $241 (seems like an excellent price), via air (7 days) total $329 (not bad either)
This is from Shenzhen Haomi Electronic Ms. Anny Jiang.
Tip:
For the 152Ah's , I have 48 of them.
They delaminate / bloat easy if the are not clamped /compressed on the large sides.
I learned this the hard way.
Please start with propper clamping setup before using, or share my experience.
That sucks! I am waiting for my 200 Ah cells, but I will then clamp them then. Should one leave a some gaps between cells for ventilation? I was thinking something like a slotted plate so they'd be compressed every 1 cm but with 0.5 cm gaps for ventilation.
The 280Ah cells are supposed to me compressed with 300kg/f
To keep that simple, you don't need to crush them, just prevent delaminating / bloating.
For the terminals z they are more sensitive, max 8Nm torque!!
And that isn't a lot.
You should cross-post this to the Humor section. Thanks for sharing I enjoyed it!Watch the voltage on the power supply...
Answer is simple : NO.
In my thread about making bus-bar (melting copper) we had quite a long discussion about it.
The 280Ah cells are supposed to me compressed with 300kg/f
To keep that simple, you don't need to crush them, just prevent delaminating / bloating.
For the terminals z they are more sensitive, max 8Nm torque!!
And that isn't a lot.
I was concerned at first also about heat.
We talk about a few degrees with normal solar charge and home use.
Nothing to worry about.
The copper bus-bars already make kind of heat transfer / cooling.
And probably you have space between the cells at the short end to be able to compress.
300kg/f is for 4 threaded rods on each side +/- 12Nm
That also isn't a lot.
Bit further then hand tight.
Little more force then the terminals
If you are ready worried for temperature rises, a friend and I did some brainstorming...
And came up with the following:
- Submerged in special non conductive liquid like mineral oil (with or without radiator. Depending on the liquid, 2 phase won't need, but then it needs to be closed)
- water cooling blocks,
- heat pipes,
at 0.1C I suspect you'll be A-O.K.Yeah I watched Will's video on the Fortune cells and thought the design of them was good. I was super happy that you had designed a 3D printed shroud (I bookmarked your reply!) but slightly concerned about compression after @fhorst 's reply...
I wonder if the charge/discharge rate will affect how likely the cells are to bloat. Like you, my use case is relatively light duty to what I imagine a lot of people on this forum are doing. I only plan on using a 30A Solar Charge Controller with all DC loads connected it. So even at max current that is 0.1C (280Ah cells) - 0.3C (100Ah cells) and I doubt I will even use the full 30A most of the time.