Don't laugh. Still can't catch how a Mophie case works.

[Racineur]

Hello. Start laughing now and keep on laughing when reading. I just bought a Mophie Juice Pack Air for my 6s. Searched and searched but the answer to this simple question is nowhere to be found. How does it work? I know it charges the iPhone up to 100% and it starts by charging the phone and then the case charges itself. Is the the power of the case used to power the phone when the phone's battery nears 0-5%. Or does it charge the phone battery as soon as the battery depletes being only 1-2%? In a nuthsell, when the phone battery is drained, does it stay drained and the case enters in action? Believe me, xillion of unboxing and sliding the iPhone in the case videos, but not one explaining how it works. Not even on Mophie's site. If the purpose of the case is to keep the iPhone battery at 100% al the time, can it damage the battery. Waiting for some light. Thanks friends.

 

[Phil Holland]

It will no more hurt your battery than leaving it plugged into the oem charger will.

 

[ActionableMango]

You fundamentally misunderstand how charging works. The Mophie doesn't charge the iPhone battery. The little white "charger" that comes with your iPhone also doesn't charge the iPhone--it's really just an AC/DC adapter.

What controls the charging of the iPhone battery is a smart lithium charger built into the iPhone. This charger is aware of many factors and will intelligently know whether to charge quickly (battery low), trickle charge (battery nearly full), or not charge at all (battery full). That charger is the entity that is making all of the charging decisions.

All the Mophie is doing is making power available to the built-in iPhone charger. The charger in the iPhone itself decides whether or not to charge and how fast.

 

[OriginalAppleGuy]

If I'm not mistaken, the Mophie has a switch that allows you to control when power is sent to the phone. When on, it supplies power just like any other power adapter does.

 

[Peter K.]

If I'm not mistaken, the Mophie has a switch that allows you to control when power is sent to the phone. When on, it supplies power just like any other power adapter does.

This is correct. Until that switch is turned on, the battery is idle. Turning the switch on makes the phone act just as if it were plugged into the wall.

 

[Racineur]

OK then. The Mophie is nothing else but a charger. When the iPhone battery dries out, the Mophie's battery kicks in and charges the iPhone. I thought the Mophie could act as a spare battery taking the relay after the Phone battery is depleted. Next, you charge both batteries at the same time.