It is perfectly valid and normal to use a 20W USB-charger with an iOS device. Any standards-compliant charger is fine. Apple chargers follow the same standards as chargers from other vendors.
What kind of charger does the iPhone 5S use?
Lightning connector
Like the iPhone 5 and recent iPad and iPod touch models, the iPhone 5s and 5c use Apple’s Lightning connector for all wired connections. (The phones ship with a USB-to-Lightning-connector cable for charging and syncing.)
Does iPhone 5S support 10W?
No. Charging speed is regulated by the charging circuit inside the phone. The 5 W charger can supply all the current it can use. The 10W can’t add to that.
How long does it take an iPhone 5S to charge from dead?
It should take about 3 hours for a full charge using the USB wall adapter. If it was charged to at least 50%, then turned off before storing it the phone should recover. However, if it was left powered on and near discharged permanent damage may have been done to the battery.
What is the difference between 18W and 20W charger?
Using a 20W charger provides an extra 20% of power to the battery (17% with an 18W charger). Low battery anxiety is real, and it’s not so much about knowing that your battery is about to die, but because you have no idea when you may be able to recharge.
What is the battery capacity of iPhone 5S?
1560 mAh
APPLE iPhone 5s (Gold, 16 GB)
Battery Capacity
1560 mAh
Battery Type
Li-Ion
What kind of chargers do you get for iPhone 5S?
Chargers 2-Pack Charging Cable Cords with 2-Pack USB Chargers 2 Pack 6ft Charging Cable Cords Nylon Braid Chargers 2 Pack 6ft Charging Cable Cords Nylon Braid Charger 10FT Charging Cable Cord Nylon Braided USB D
What kind of Charger do I need for my iPhone 8?
Fast charging gives you a quick and convenient way to recharge your iPhone 8 or later. Your iPhone fast charges up to 50 percent in 30 minutes when you use an Apple USB-C to Lightning cable and one of these adapters: Apple 18W, 29W, 30W, 61W, or 87W USB-C Power Adapter.
What kind of adapter do I need to Fast Charge my iPhone?
Fast charging works when you use an Apple USB-C to Lightning cable and one of these adapters: Apple 18W, 20W, 2 29W, 30W, 61W, 87W, or 96W USB-C Power Adapter A comparable third-party USB-C power adapter that supports USB Power Delivery (USB-PD)
What kind of power adapter does Apple iPhone SE use?
Testing conducted by Apple in February 2020 using preproduction iPhone SE (2nd generation) units and software and accessory Apple USB-C Power Adapters (18W Model A1720 and 30W Model A1882).