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The practical limit for battery capacity is 100 Wh; beyond that you need airline approval to travel with it. Apple's 17" Unibody MBP had a 95 Wh battery, and when that was discontinued the 15" rMBP offered 95 or 99.5 Wh until the Touchbar was added. If Apple were to reintroduce a 17" model, it could only offer 19% higher battery capacity than the current 15", which means it probably couldn't offer any better battery life.

I'd rather just see the 15" rMBP get a bit thicker so that it can have more variety of I/O and stay at the ceiling for battery capacity.






The practical limit for battery capacity is 100 Wh; beyond that you need airline approval to travel with it.

Does that also apply if it’s two batteries, both physically removable, from the outside? Just curious. SWMBO and I travel with can lights for diving, big batteries but none individually over the limit.


Yeah, it’s per battery. I usually carry two nearly 100wh battery banks. Never a problem. I imagine 100wh limit is what they’ve determined they can contain if it catches fire. I believe they also offer exemptions for slightly more with airline approval.

Seems to be you can carry max 15 devices with built-in 100Wh battery and 20 extra 100Wh batteries. Larger batteries require approval.

https://www.iata.org/whatwedo/cargo/dgr/Documents/passenger-...

Btw, newer Lenovo T4x0 models have a very nice dual-battery configuration, which allows you to swap the battery without shutting down.


apple could never "regress" to user replaceable batteries unless ive retires/is replaced.their design culture would not allow it



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