Serial battery charging with in series TP4056 modules? Sort of YES! :-D

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Enderman
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I don’t think you understand.
This is not about trickle charging to maximum voltage.
This is about constant trickle charging that keeps a cell topped off at maximum voltage.
The trickle charging does not stop when the cell reaches max voltage.
There is still current flowing into the cell to KEEP IT at 4.2V.
The harm comes from the fact that it never ends charging and just keeps putting energy into the cell, even though it never goes above 4.2V.

Barkuti
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Enderman wrote:
I don't think you understand.

This is not about trickle … to KEEP IT at 4.2V.

I fully understand.

Enderman wrote:

The harm comes from the fact that it never ends charging and just keeps putting energy into the cell, even though it never goes above 4.2V.

Where is the source claiming the trickle charge is what damages the cell?

Is that the actual cause of cell damage, or is it the accelerated aging caused by the high voltage?

As I understand it, the actual cause is the latter.

 

Cheers Smile 

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Enderman
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Barkuti wrote:

Enderman wrote:
I don’t think you understand.

This is not about trickle … to KEEP IT at 4.2V.


I fully understand.

Enderman wrote:

The harm comes from the fact that it never ends charging and just keeps putting energy into the cell, even though it never goes above 4.2V.

Where is the source claiming the trickle charge is what damages the cell?


Is that the actual cause of cell damage, or is it the accelerated aging caused by the high voltage?


As I understand it, the actual cause is the latter.


 


Cheers Smile 


https://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
https://batteryuniversity.com/learn/article/how_to_charge_li_ion_with_a_...
https://en.wikipedia.org/wiki/Trickle_charging
https://ecs.confex.com/ecs/224/webprogram/Abstract/Paper23632/B10-1075.pdf

“increase in the thickness of the solidelectrolyte-
interface (SEI) film that formed on the anode
over time because the SEI film formation involves lithium
ion consumption, which reduces the number of mobile
lithium ions in the cell.”

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