iPhone 14 ケース - バッテリーフォンケース - Casebus クラシック バッテリーフォンケース、ポータブル充電ケース、ワイヤレスヘッドホン対応、超薄型ポータブル充電バッテリーパック - QUINN - Casebus

It's barely thicker than a regular case but doubles my battery life, and the wireless headphone passthrough works without me taking the phone out. I've used it all day at work and still had juice left by the evening.

I was skeptical about how slim it could be with a battery built in, but the wireless headphone support is a nice bonus and it charges my phone about 85% before the case itself needs a top-up. It adds a bit of weight, but for all-day trips it's completely worth it.

The extra battery in this case gets me through a full day of heavy navigation and streaming, and it still charges my wireless earbuds without me hunting for a cable. It's slim enough that my phone doesn't feel like a brick in my pocket.