what is portable battery?

- Aug 22, 2016-

what is portable battery?


portable battery means kind of battery which gives power for handheld or wireless devices.


it also can mention big group to drive a small group, e.g. laptop on knees.


eventhough, batteries above might be computer imbeded clock or spare batteries.Big size batteries, like 4kg and above, not called portable batteries. nowadays portable batteries are usually hundreds grams in weight.


by the way, portable battery not only means primary battery but also rechargeable battery (secondary battery). and button cell is kind of particular part of them.