Title page from NBS Circular 504.jpg
National Institute of Standards and Technology
en
Title page from NBS Circular 504, Electric battery diagrams, Rechargeable batteries, History of electric batteries, National Institute of Standards and Technology, National Bureau of Standards, Media lacking a description
commons
ja
NBSサーキュラー504のタイトルページ、電気電池図、充電可能電池、電気電池の歴史、国立標準技術研究所、国立標準局、メディアに説明がない
commons_translated
storage battery wet cell rechargeable aggressor battery-powered national institute of standards and technology percolation accumulator battery