Yes, iPhone battery packs are worth it. They provide numerous benefits, such as:

Yes, it is perfectly fine to use a portable battery charger for iPhone charging if they have compatible connectors and charging power. However, please always use certified power banks from reputable manufacturers like the Anker 737 power bank featuring fast charging and temperature monitoring for convenient, efficient, and safe charging.

This depends on the capacity of your iPhone battery case. As a general guideline, a power bank with a capacity of 5000mAh should be sufficient for a single full charge of most iPhone models. However, if you're a heavy iPhone user or want more times of charging for your iPhones, 10000 mAh power banks or even higher ones would be ideal.

Yes, a 10000mAh power bank is enough to charge any iPhone at least once. On average, a 10,000mAh power bank can recharge an iPhone 11/12/13 around 2-3 times from 0 to 100%. However, if you want more than 3 times full charges without recharging your power bank, higher capacity power banks are needed.

This depends on the specific iPhone and power bank capacity. To get the number of times your iPhone can be charged with a power bank, divide the power bank capacity by the phone’s battery capacity. For example, the Anker 737 Power Bank has a capacity of 24000mAh, and an iPhone 13 Pro Max has a 4352mAh battery. So, the Anker 737 can charge an iPhone 13 Pro Max roughly 5.5(≈24000/4352) times.