MP26124 - Recharge Comperator Function of MP26124

Battery Management
1

I am curious about some aspects of the recharge comparator feature of the IC.

I assume we are charging 4 cells, each up to 4.2V using this product.
After using these batteries for a short period and reconnecting them to the charger, the recharge comparator feature prevents recharging if the batteries have not dropped below 4V.

auto recharge

(Additionally, there is a BMS circuit in the product to which the batteries are connected.)

First, I am curious about the primary purpose of this feature: is it to protect battery health, prevent overvoltage hazards, or is there another reason I am not aware of?
If it’s to protect the battery, for example, why don’t we see such a situation when we charge smartphones? After all, the batteries used in cell phones are also lithium-based.
Could you explain this part?

I don’t know if I can disable this feature because it is an internal feature. If it is possible to disable this feature, how can I do it? Thank you in advance for your reply.

2

The auto recharge paragraph states that all blocks are disabled except for monitoring to reduce the leakage current.

As you stated it is internal and there does not seem to be a way to disable it. Shown here is how the voltage being compared is established.

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3

Thank you for your reply.

So what is the reason for the 4V feature in this recharge comparator?

To protect the battery?