Recent content by mmame

But take care: Aluminium could be very annoying due to the strong surface oxidation.

One :-) But this number also depends on desired target RdsOn/max acceptable heat dissipation.

You can use the same cables or attach separate wires in parallel, whatever you prefer.

Depending on size, jlcpcb.com could be affordable, too.

"CE" is NOT a certification but a declaration from the vendor that a products fulfills certain specification(s). Thus, the provided documents could be just okay. If you want to enforce that certain (EN-) specifications are fulfilled, it might be necessary to inspect the detailled test reports...

A step-down converter will easily whitstand millions of power-cycles - or at least much more cycles than a high power relay will whitstand.

If I were you, I would discard all batteries below 2.5V - for safety reasons. And yes, those batteries are crap.

I guess you're comparing RMB/Wh vs RMB/Ah ....

As a general rule (at least when using battieries with integrated BMS), only identical can/should be put in series or parallel. Depending on used BMS, there could be some limitations (i.e. only putting in series permitted). 100..200W is easily achieveable with some generic 24/12V step-down...

+1 on trying to keep the system as simple as possible ? Using 24V makes only sense when using 24V inverters, too. So, starting with 12V and then moving to 24V requires new inverters. What are your power needs for 12V-only systems? 10..100...1000W? Maybe a simple 24/12V stepdown converter would...

Imho there is no "cheap"ready-for-use solution available. My personal approach would be: - avoid any (expensive) switching on high current 12V side - Buy an (inexpensive) inverter with remote control which fits the power needs - Build the desired logic (i.e. temp sensors...) with some...

Maybe a silly idea: what about using other kind of temp sensor with more noise immunity, like DS18B2x or NTC or....?

Sure, but in diy appliances, busbars are normally used way below it's rated limit. So much less heat. If the thread creator would tell busbar size and amps, we could do the math...

Imho busbars shouldn't get "hot" as lang as they aren't undersized.

Ouch, looks I was wrong.... - seems to be LiFePo, not Li(Co)Po