Does the iPad 2017 Charger Work on iPhone 12 Pro? Exploring Compatibility and Charging Efficiency

When transitioning between different devices, it is a common question whether chargers from one device can be used with another. In this case, we're looking at whether the charger from an iPad 2017 can be used with an iPhone 12 Pro. While the answer is often 'yes' for most standard chargers, there are nuances and caveats that should be considered. This article delves into the compatibility of iPads and iPhones and explores the charging efficiency for your mobile devices.

General Compatibility and Performance

As long as the charger fits a Type-C or Lightning port and provides sufficient current, any charger can technically work. Apple has designed the Lightning connector to be versatile and intended for cross-device use. Regardless of the charger you choose, it will charge your iPhone 12 Pro. The main consideration is not the brand or model of the charger but rather its cable quality and current capacity.

Why Better Chargers Are Better

While any charger can technically work, better chargers offer several advantages, even if you're already using an old charger. Higher-end chargers, such as 18W or 20W models, can charge your device faster and more efficiently. This is particularly noticeable when you need a device to be fully charged quickly, for instance, before an important meeting or during a long period without a charging break.

Charging Speed and Battery Durability

Using a charger that is rated for a higher wattage can lead to faster charging. However, it's important to note that modern iPhones are smart and will adjust the charging speed based on the available energy. For instance, if you use an iPad charger (which might be 12W or 18W) with your iPhone 12 Pro, the iPhone will limit the charging speed to around 18W. This is because it recognizes that the iPhone 12 Pro can only safely handle that amount of power, regardless of the charger's maximum output.

Charging Through USB-PD

If the charger you use is a Type-C USB-PD (Power Delivery) charger, there is a limit to how fast the charging process can occur due to the iPhone's negotiate function. Your iPhone 12 Pro will negotiate a 'ceiling' in the vicinity of 18W, even if the charger is capable of faster charging. This is to protect the battery and extend its service life. When the device is nearing its fully charged state, it will start requesting a slower trickle charge. This process, known as trickle charging, is designed to protect the battery and may be more favorable from a longevity standpoint.

Therefore, Conclusion and Recommendations

Yes, you can use the charger from your iPad 2017 to charge your iPhone 12 Pro. However, the charging speed will be limited to 18W, regardless of the charger’s maximum output. This is a designed feature that prioritizes battery longevity and safety.

While it is perfectly fine to use the charger you have, if you are looking for a more efficient charging solution, investing in a higher-wattage charger can be beneficial. Ultimately, the 18W charger from your iPad 2017 should be sufficient for most charging scenarios, providing a good balance between speed and battery health.

Key Points to Remember:

Chargers from different Apple devices (like iPad and iPhone) are generally compatible with each other. Better chargers, such as those with higher wattage, can charge faster. The iPhone will limit charging speed to 18W with a compatible charger, even if the charger’s capacity is higher. Trickle charging helps extend battery life.

QA

Q: Is it better to use an old charger that limits charging speed or a new, higher-wattage charger?

A: It comes down to your needs. If you prioritize speed, a higher-wattage charger will charge faster. However, if you're concerned about battery longevity, the original charger will likely be just as effective and may even be slightly better due to the trickle charge feature.

Q: Can I use a USB-C charger with my iPhone?

A: Yes, as long as it is compatible with USB-PD and the iPhone can negotiate the charging speed up to 18W. USB-C is versatile and can support charging for compatible devices.