Mr. Cucumber

I know they're not for general usage..and I have worked with cryogenic materials... ... I want to make my own LN2 or LHe2 at home ... I'm looking to buy the control circuitry too .... The control modules... I can't find any pricing anywhere... Can you help?

Cab you suggest a good high power lithium ion chargers?...

Can anybody tell me what's the price of those 40K and 4K cryocoolers ... Fron shi cryogenics ir cryotel ... Striling cryocoolers .... Where can i get them in canada and what's the usual price?

Yes that too XD

Have you tried the magical land of AliExpress?

After much thought... I've decided to go with 40 A modules in series and get 148 v and which will lower my current draw to 35 amps But...what inverter should I use which will give me 5kW of power at 110vac? And I'll use a custom bms circuit which will be integrated into all A modules ... (Each cell voltage is 3.7v ...so the inverter should not charge them over 4.1v and drain them below 3.2v just to be safe ...now can you give me an inverter which will work from 128 to 164v on the input)

I want to make a closed lool cooling system made out of custom machined pure copper blocks and petg pipes... Now I need a all Plastic pump (mainly the parts where the coolant comes in contact should be teflon ... Or any thermostable plastic) and a copper radiator... First question are all copper radiators even available? And if there is a pump that meets my specifications please give me the link to the product... Thanks in advance...

My arrangement is shown in the photo...and I thinking of using circuit breakers at the main output lines for example a 500A breaker at thr 14.8v potential line but will a 500A DC circuit breakers work in 14.8V? I know circuit breakers aren't usually tripped by voltage (open circuit) but for 14.8V volts? Will it work? Because I really want to use breakers for their convenience and safety.

I have 2000 18650 Samsung 20S 18650 cells. I want to arrange them in 100 parallel units making 20 units and 10 units in parallel and 2 of those 10 units in series... Can I do it?.. If I can...then how should I do it to ensure safety and good performance of the batteries and longevity of the cells.

I has $800 burning a hole in my pocket.... So I decided to buy a 400 psi, 3 cfm, 2 hp air compressor ... But now what I'm gonna do with it?

I know.... It's weird flex but okay type ...

Have you guys ever seen that rap music video... I don't know rap or hip-hop...where two rapper's were in a plane. With graffiti outside the plane...and a kid was in a forest with all weird thins ... Like abandoned amusement parks ..and the kid (African i.e everyone in that vide was African) went into this Stone human head ... Walked into the mouth... And at they very end there was something like asteroid... Or something written... Can you guys name the song please?

Household stuff and occasionally some projects .... Nothing professional... If it was for professional I would invest in good name brand tools... (DeWalt, Makita, Milwaukee, aircat and other such brands) because they would aid me to make more money thus pay off their price very quickly.

Talking about AVE?

I know I'm going to get some backlash from the professionals...but.... Are Chinese tools that bad...ate there any good brands? (Not the super cheapo ones) and if there is (are) please suggest.