Cellphone battery charge to 4.35V

Recently I brought Samsung Galaxy Ace 3 LTE phone.
Nice phone and I have no any issue with it.
It has Li-po/li-ion (battery label say it li-ion only.) 1800mAH capacity

Once phone say battery fully charged. I removed battery and check the cell voltage. its 4.35V

I don’t know about other phones, but my Galaxy S5 have a 4.3v battery when fully charged.

My chinese smartphone has a 4.35v battery…. it says in the label 3.8v not 3.7….

Batteries of 3.7v charge up to 4.2v.

Batteries of 3.8v charge up to 4.35v.

In the galaxy S4 also load 4.3V…… the battery says 3.8V

In the galaxy S3 the charging stops at 4.3v on the dot.

4.35/4.3V might be the norm for smartphone batteries.
From the rumored iPhone 6 battery pics I’ve seen it says 4.35V as well.
I think the current iPhone 5s has 4.3V

I think new phones use new li-ion chemistry battery. early phone batteries fully charged at 4.2V

https://learn.adafruit.com/downloads/pdf/li-ion-and-lipoly-batteries.pdf

My Samsung Note 2 has 3100mAh @ 3.8V

I just finish charging my G2, and the ending voltage was 4.34v! damn, in this way my phone wont even last few months? WTH?

Dazed1, its likely a 4.35v battery. Its charging correctly.

What i don’t understand, is this.

Are this 4.35v cells tougher then 4.2v, and can be perfectly safe charged to 4.35v, or they just overcharge and sell them with alot less life cycles?

They are designed for 4.35v. You could call it tougher.
A 4.2v cell can’t be overcharged to 4.35v, its dangerous, not just a matter of life cycles.

Thanks!

my Samsung note battery says 4.35V

Seems like 4.30/4.35V is the norm for recent phones.

I’m still on the lookout for apps or kernel mods that would limit the charging voltage to 4.20V or even lower, as I would like to maximize my battery life. I don’t discharge below 60% so I don’t use all the capacity anyways. :slight_smile:

I never go bellow 3.5, which is perfectly fine. New phones have protection build in, my cell is reporting at 5% when it is at 3.5v so there is no need to recharge at 40% 10% is perfectly fine :wink:

Hi guys. I got a new question. new smartphones coming up this days, and they are rated to 2A charge (“fast chargers”) will this absolutely destroy the battery in short time? i know i know, we change phones every year, but that does not mean that i should ruin it, i think i will get lower amps charger, and be done with it.

Yes, there is a tradeoff between charging rate and battery life. Keep in mind though, charging rate is generally defined in terms of cell capacity, so if they move from a cell with capacity X with a 1A charge rate, to one with capacity 2X, and a 2A charge rate, the relative charge rate remains the same. Its quite possible that they have traded some battery longevity for a higher charging rate, but they’ve gone so far as to destroy the battery in a short time. That said, if you usually charge your phone overnight and don’t need fast charging, nothing wrong with using a 1A power source.

So what you are saying is, 10000mAh cell, can be charged at 3A with no problems, compared to 3000mAh which should be charged at 1A? that seems very strange to me.