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#WHICH POWER ADAPTER FOR MACBOOK PRO HOW TO#
#WHICH POWER ADAPTER FOR MACBOOK PRO PRO#
#WHICH POWER ADAPTER FOR MACBOOK PRO PLUS#

Optimized Battery Chargingīatteries don’t like being held at 100%, but users want their batteries to be at 100% when they start the day. To get the rest of the way in a manner that doesn’t result in the battery sitting at 100% for a long time, Apple developed Optimized Battery Charging. However, Marques Brownlee explains that fast charge doesn’t typically reduce your battery life by much, if at all, due to various techniques that reduce the amount of heat generated.īut fast charge only takes a battery to 50%. But with great power comes great responsibilityheat, leading some to believe that fast charge shortens your battery life.

#WHICH POWER ADAPTER FOR MACBOOK PRO PLUS#

16-inch MacBook Pro: A 140-watt power adapter plus a USB-C to MagSafe 3 cableįast charge works by delivering more power to the device from the adapter.

14-inch MacBook Pro: At least a 96-watt power adapter plus a Thunderbolt, USB-C, or MagSafe 3 cable, or an external display with 94-watt power delivery via Thunderbolt 3 or USB-C.

iPads: At least a 30-watt USB-C charger with a USB-C cable.

iPhones: At least an 18-watt (20-watt for the iPhone 12) USB-C power adapter that supports USB Power Delivery (USB-PD), plus a USB-C to Lightning cable.

For each of the device families, you need:

#WHICH POWER ADAPTER FOR MACBOOK PRO PRO#

Fast ChargeĬertain Apple devices-most notably the iPhone 8 and later, USB-C iPad models, and 14-inch and 16-inch MacBook Pro models-support fast charge, which can boost the battery up to 50% in 30 minutes.įast charge requires a sufficiently powerful charger and appropriate cable-it does not work with wireless MagSafe and Qi chargers. In an effort to meet both of these conflicting desires, Apple has developed two seemingly contradictory technologies: fast charge, which does what it says, and Optimized Battery Charging, which actually makes the battery charge more slowly. Long-term, they want the battery to maintain its capacity for as long as possible-replacing a battery to bring a device back to decent daily battery life is expensive and annoying. In the short term, they want the device always charged and ready to use-little is more frustrating than running out of power earlier than you’d expect in a day. Users have two conflicting desires with regard to batteries, whether or not they realize it.

Holding the battery at a 100% charge level.

It’s more forgiving than older technologies like nickel-cadmium, but it’s all too easy to shorten a lithium-ion battery’s lifespan by: The inherent problem is that lithium-ion-the current battery chemistry of choice-isn’t particularly stable. Engineers keep finding ways to cram more transistors into chips, but batteries have hit a brick wall of physics, forcing hardware makers like Apple to invent creative workarounds for those limitations.

The most significant limitation for mobile devices is power.

How Apple Works Around Battery Chemistry Limits with Fast Charge and Optimized Battery Charging #1607: TidBITS 32nd anniversary, moving from 1Password to KeePass, pasting plain text, Mail fixes anchor links, RIP Eolake.

#WHICH POWER ADAPTER FOR MACBOOK PRO HOW TO#

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