also: バッテリゲージ
battery gauge
A display or indicator showing the remaining charge of a battery, commonly found on electronic devices such as smartphones, laptops, and cameras.
The smartphone's battery gauge is down to 20%.
Please charge the device when the battery gauge turns red.
Variant without the long vowel mark; less common but still used.
Spelling with an interpunct; sometimes seen in technical contexts.
Rare variant combining the short form and an interpunct.
Loanword from English 'battery gauge'.