S-pen Battery?

[bobbyleebrown.bb]

How long should the battery last when using as a normal pen? Not using air gestures.

 

[chanchan05]

Forever. Or at least as long as the phone itself has battery. The pen inking feature doesn't use the battery for writing. For example, the Note 8 Pen doesn't have a battery but it would work on the Note 9 and 10 whose pens have batteries.
The S Pen's pen feature works using a special EMP digitizer which powers the pen from the screen itself.

 

[KruseLudsMobile]

Forever. Or at least as long as the phone itself has battery. The pen inking feature doesn't use the battery for writing. For example, the Note 8 Pen doesn't have a battery but it would work on the Note 9 and 10 whose pens have batteries.
The S Pen's pen feature works using a special EMP digitizer which powers the pen from the screen itself.

I thought it also had a capacitor to store the other needed energy, that was "recharged" while in the phone. I thought the coil around the S-Pen nib was just for measuring how hard someone is pressing on the screen (if using a brush when drawing, for example).

 

[strikeIII]

I thought it also had a capacitor to store the other needed energy, that was "recharged" while in the phone. I thought the coil around the S-Pen nib was just for measuring how hard someone is pressing on the screen (if using a brush when drawing, for example).

The capacitor is for the Bluetooth connectivity which is for the gestures and remote functionality. The actual pen features doesn't need it.

 

[chanchan05]

I thought it also had a capacitor to store the other needed energy, that was "recharged" while in the phone. I thought the coil around the S-Pen nib was just for measuring how hard someone is pressing on the screen (if using a brush when drawing, for example).

Nope. The battery was only for the remote features. The S Pen only had a battery in the Note 9 going forward. All Notes' S Pens before that never needed charging and had no batteries. They're using the same tech for the pen to write, and just added extra features that needs battery and charging.

 

[bobbyleebrown.bb]

My S-pen loses its battery charge in 15-20 minutes. Phone tells me to charge it. I thought it was supposed to last at least an hour before needing a charge!

 

[CKwik240]

Nope. The battery was only for the remote features. The S Pen only had a battery in the Note 9 going forward. All Notes' S Pens before that never needed charging and had no batteries. They're using the same tech for the pen to write, and just added extra features that needs battery and charging.

It is still not a battery unless they went a different route then with the Note 9 (which I doubt). It's a super capacitor.

 

[KruseLudsMobile]

Nope. The battery was only for the remote features. The S Pen only had a battery in the Note 9 going forward. All Notes' S Pens before that never needed charging and had no batteries. They're using the same tech for the pen to write, and just added extra features that needs battery and charging.

That is exactly what I meant, for the Note 9 and above, and it's not a battery but a capacitor storing the energy.

 

[KruseLudsMobile]

My S-pen loses its battery charge in 15-20 minutes. Phone tells me to charge it. I thought it was supposed to last at least an hour before needing a charge!

I would suggest reaching out to Samsung. You can chat with them directly in the Shop Samsung or Samsung Pay app. They will most likely just mail you a new S-Pen!

Folks, don't forget the "Samsung Members" app. Very useful resource too!

 

[chanchan05]

That is exactly what I meant, for the Note 9 and above, and it's not a battery but a capacitor storing the energy.

The OP asked for "when used as a normal pen". In which case the stored energy doesn't matter. Even the old pens will work on the Note 9 and 10, showing that it doesn't need power to write.

 

[chanchan05]

It is still not a battery unless they went a different route then with the Note 9 (which I doubt). It's a super capacitor.

Accomplishes the same thing for the purposes of this particular discussion anyway.

 

[CKwik240]

Accomplishes the same thing for the purposes of this particular discussion anyway.

Sure. But the misinformation could affect how people understand the tech.

 

[bobbyleebrown.bb]

Samsung says the S-pen should have a 10 hour stand by time!

 

[wunderbar]

The battery in the spen on the note 10 has crazy staying power. And yes, it is a battery, not a capacitor like the Note 9. The ifixit teardown shows it as a proper battery.

https://www.ifixit.com/Teardown/Samsung+Galaxy+Note10++5G+Teardown/125590

I had the pen out of the phone for over an hour yesterday just to see if I could get it to drain and it never went below 100%. on the note 9 the capacitor would lose power in about 40 minutes.

 

[bobbyleebrown.bb]

Had to take phone back to Verizon to trade in for another one. When I take the S-pen out it shows 80% and instantly drops to 40% or less

 

[toenail_flicker]

https://www.ifixit.com/Teardown/Sams...eardown/125590

thanks for this. love these teardowns

 

[Mike Dee]

Had to take phone back to Verizon to trade in for another one. When I take the S-pen out it shows 80% and instantly drops to 40% or less

I assume you mean the original one and not the swap

 

[bobbyleebrown.bb]

I assume you mean the original one and not the swap

Yeah the original one, tried swapping mine into it and it wouldn't register it as having an S-pen.