anyịnya igwe mmanụ ụgbọ ala na -enye uru dị ukwuu karịa igwe eletriki batrị eletrik n'ihe gbasara oke na mmanụ ọkụ. Ebe batrị na -ewekarị awa ole na ole iji fanye, hydrogen cylinders nwere ike mejupụta n'okpuru nkeji abụọ.