- Understand the science behind lithium-ion batteries
- Know when to replace your battery
- Comprehend the pros and cons of wired and wireless charging
Apple iPhones use lithium-ion batteries that degrade over time, but new devices need not worry. Understanding the science behind batteries and the expected battery life of Apple devices can help users intelligently manage their device’s lifespan. A battery consists of an anode (+) and cathode (-) separated by a generally flammable electrolyte. When a device draws power from the battery, charged lithium ions move from the anode to the cathode through the electrolyte, releasing electrons. Apple says its batteries are designed to retain up to 80% of their original capacity at 500 complete charge cycles.
Before iOS 10.2.1 in 2017, the iPhone didn’t consider aging batteries in its software. Recent devices had more powerful processors, thinner designs, and brighter displays, which led to smaller batteries with lower capacities that died faster. This caused users to experience shutdowns with battery levels of 30% or more. iOS 10.2.1 and subsequent updates created safeguards that throttle the CPU based on the device’s remaining battery health and prevent inadvertent shutdowns.
When it comes to managing battery health, there is no need to worry too much. Apple has implemented several tools, invisible to the user, to make sure battery health is extended for as long as is practical. For example, a dedicated power management processor ensures power draw is controlled for optimum charging rates at any given moment. The iPhone can also learn charging habits and adjust how the device is charged based on that.
When it comes to choosing how to charge an iPhone, users can choose between a Lightning cable, a MagSafe puck, and a Qi wireless charging pad. Each method has its own advantages and disadvantages. Wired charging is fast and inexpensive, and won’t generate heat, but it requires a cable. MagSafe chargers have the advantage of quick charging, but are more expensive and take up more space. Wireless charging is convenient and won’t wear out the charging port, but is slower and heats up the device more.
Overall, users should understand the science behind lithium-ion batteries and charging options to manage their device’s battery health. With the right knowledge and charging habits, users can extend their iPhone’s battery life for as long as possible. Charging your iPhone efficiently is essential if you want your battery to remain healthy. Wired connections can provide up to 27 watts of power in half an hour, while wireless Qi and MagSafe charging can provide up to 15 watts. However, wireless charging can be less efficient and generate more heat, leading to a faster degradation rate for your battery. To ensure maximum battery health, it is best to trust the battery management software and use some basic best practices. Avoid direct sunlight, keep it off hot surfaces, and prioritize wired charging, fast charging, then MagSafe and Qi charging. Overnight charging is perfectly safe and can help you top off your battery. Keep in mind that battery health will degrade over time no matter how you manage charging and a battery replacement may be necessary after two years.