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Memory Battery / Memory battery

Memory Battery
Memory Battery

Do you have any problem recognizing the batteries that have been used?
“Memory Battery”,with its special scrape piece in its bottom,makes a great contribution to distinguishing between the new batteries and the old ones quickly.The used batteries easily left scratch while the new ones never.The Memory Battery can not only take the new batteries from the old ones,but also it prevent you from using the new batteries together with the old ones.

University

University of south China

University of south China
Hengyang City, China