While still in school, I restored the spent battery pocket receiver rather primitive, but effective way. With pliers gently removed the graphite rod and filled the battery with water. Then waited until the water completely evaporated, put back stem — and battery-some time worked better than new.
Recommend to read
TRAPPED IN THE”HOLLANDS”
The views of Americans on submarines before the First world war was somewhat different from those in European fleets. Overseas shipbuilders in those "baby" years of development of...
CRUSHED GRAINS? NO PROBLEM!
In the journal "Modelist-Konstruktor" No. 2 for 1989, material by A. Baklansky from Kremenchug, Poltava region, was published about a micro mill that he designed for his household. This...
