qī / hào / diàn / chí / tǐ / jī / xiǎo / cháng / yòng / yú / yáo / kòng / qì / shǔ / biāo / děng / xiǎo / xíng / diàn / zǐ / shè / bèi

七号电池体积小，常用于遥控器、鼠标等小型电子设备。

AAA batteries are compact and commonly used in small electronic devices like remotes and mice.