The sound is amplified 2/2 the recording phone being wedged in round tube sitting on the same glass.
A test strip of Amazon 0.2 “pure” nickel in yellow brawndo, bc its got electrolytes.
Subjectively, this feels easier. Package is smaller, and 3s happens to be extra convenient for me.
If I make a li-ion pack, I’ll break out the thermal cam to compare probe heat in hands to the malelectrics footage I have. I was able to heat probes up to temps I couldn’t comfortably hold without gloves.