Top 12 iPhones with the Best Battery Life in IndiaiPhone 15 Plus | Battery Life: Up to 36 - 72 hours. ... iPhone 15 Pro Max | Battery Life: Up to 36 - 48 hours. ... iPhone 15 | Battery Life: Up to 30 hours. ... iPhone 14 Pro Max | Battery Life: Up to 25 hours. ... iPhone 14 Pro | Battery Life: Up to 25 hours.