Sistimi e ntle haholo ea ho itšehla thajana e ntlafalitsoeng bakeng sa lits'ebetso tsa betri ea cylindrical;
Ho feta 95% matla a setseng ka mor'a ho boloka likhoeli tse 12 ho 25 ℃;
Ho feta 92% ea masala ka mor'a polokelo ea likhoeli tse 12 ho 45 ℃, le hoo e ka bang 82% ka mor'a polokelo ea likhoeli tse 12 ho 60 ℃.