Yap.Town

が切れそう

is about to run out

→ が
phrase Uncommon #9,232
is about to run out Follows a noun naming a supply or resource, such as fuel or battery power.
JA: ガソリンが切れそうだ。
EN: We’re about to run out of gas.

充電が切れそう。

My battery is about to die.