New iPad only charges to 99%?

[Cutwolf]

Put it to charge at night from about 60%. 9 hours later go to use it and it's at 99%.

Sup with that?

(I tried searching but searching for 99% doesn't work)

 

[netnothing]

Put it to charge at night from about 60%. 9 hours later go to use it and it's at 99%.

Sup with that?

(I tried searching but searching for 99% doesn't work)

Let it drain until it powers off and try charging again.

-Kevin

 

[mcdj]

OCCUPY BATTERY! Down with the 1%!

 

[Wide opeN]

Mine did this too last night when I took it off the charger.

Come on people, talk to me!!!

 

[BaldiMac]

Mine did this too last night when I took it off the charger.

Come on people, talk to me!!!

It's likely just a calibration issue. See post #2.

 

[aristobrat]

Put it to charge at night from about 60%. 9 hours later go to use it and it's at 99%.

Sup with that?

(I tried searching but searching for 99% doesn't work)

So, here’s how things work: Apple does in fact display the iPad (and iPhone and iPod Touch) as 100 percent charged just before a device reaches a completely charged state. At that point, it will continue charging to 100 percent, then discharge a bit and charge back up to 100 percent, repeating that process until the device is unplugged.

Doing so allows devices to maintain an optimum charge, Apple VP Michael Tchao told AllThingsD today.

“That circuitry is designed so you can keep your device plugged in as long as you would like,” Tchao said. “It’s a great feature that’s always been in iOS.

https://www.macrumors.com/2012/03/2...-continued-charging-beyond-100-battery-level/

 

[Rob9874]

This is from the Power Maintenance interface on my ThinkPad at work. This is where I learned about maximizing battery life through varying max charge thresholds.

"Battery deterioration may occur faster if the battery is constantly charged at 100%. Lowering the charge thresholds for your battery, periodically resetting the battery gauge, or using Maximum Lifespan mode will help increase its lifespan."

My work laptop is always plugged in, yet my battery % varies between 95% and 100%. Sounds like Apple took a similar approach with the iPad.

 

[MykullMyerz]

This has happened to me before but I just power off the iPad and power it back on and the battery meter is at 100%.

 

[Stealthipad]

I would get it replaced as soon as possible. Today 99%, tomorrow 50%

 

[dsquared81]

If after a few cycles and it's still reading 99%, I'd try a restore and setup as new

 

[aristobrat]

According to Apple, it charges to 100%, then it lets the battery drop a little lower, then it charges back up to 100%. This cycle repeats. See post #6 above.

So depending on when YOU look at it, it may be at the point where it's discharged a little, and 99% would be normal.