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I am holding out for a nuclear battery that lasts the entire lifespan of the device without needing a charge.
 
15 Pro Max battery life has been great for me. I limit charging to 80% and still have never dropped below 20% battery since release.
 
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Bigger battery may not mean longer battery life when the iPhone consumes more power than previous model.

It may be added to maintain the prevailing battery life.
 
16 Pro Max should have similar battery life as the 15 Pro Max due to the supposedly larger screen. Surprised to hear about the rumoured battery capacity of 16 Plus
 
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