What is another word for battery pack?
Pronunciation: [bˈatəɹi pˈak] (IPA) 
A battery pack serves as an essential component of modern electronic devices such as smartphones, laptops and power banks as it supplies power to these devices. There are several synonyms for the word battery pack, namely power bank, portable charger, battery backup, battery case, rechargeable battery and external battery. A power bank is a portable charger that can charge devices multiple times and is perfect for people who are always on the move. A battery backup provides emergency battery power during power outages. On the other hand, a battery case is a protective case with a built-in rechargeable battery for smartphones. A rechargeable battery is a battery that can be charged and used several times, while an external battery provides additional power to an electronic device when needed.
