ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,164, issued on June 24, was assigned to Greenworks (Jiangsu) Co. Ltd (Changzhou, China).
"Electric energy storage device, power tool system and charging system" was invented by Baoan Li (Jiangsu, China), Xi Li (Jiangsu, China) and Xinzhong Guo (Jiangsu, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric energy storage device, the electric energy storage device configured to be detachably coupled with an electrical device, the electric energy storage device comprises a housing, N sets of battery units received in the housing, N being a composite number, each battery unit comprising at least one battery cell, a plurality of switches, eac...