Your smartphone has something wrong with the battery.
The battery causes it.
It comes from the battery.
"それは充電の問題だと思う"
様々な表現が可能です。特に会話の中であればそう言えます。
Your smartphone has something wrong with the battery.
スマホの充電池に何か問題があるんだよ。
It comes from the battery.
それは充電池から来てるんだよ、
The battery causes it.
充電池が原因なんだよ。