GoKawiil Original Phone Battery Health: What Actually Wears It Out
Lithium-ion cells age from heat and from time spent at the extremes of charge. Most of the folklore about charging habits is either obsolete or beside the point.
Lithium-ion cells age from heat and from time spent at the extremes of charge. Most of the folklore about charging habits is either obsolete or beside the point.
Wireless chargers using the Qi2 standard convert energy less efficiently than wired cables, losing up to 30 percent of power as heat during the charging process. That extra heat can degrade smartphone battery capacity by up to 12 percent over two years, and as much as 25 percent in hot climates or environments.
Apple increased the out-of-warranty battery replacement cost for the iPhone 18 Pro and Pro Max by $10, from $119 to $129, likely reflecting the larger battery capacities in the new models. Older iPhones, including the iPhone 6 and original SE, still qualify for the cheapest replacement at $69. Apple has not commented on the price change.