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this post was submitted on 08 Mar 2024
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Yes it can, you’ve clearly never used an underpowered charger where the battery both charges and drains at the same time. Happens with any modern phone and can happen you laptops and plenty of other electronics.
Why you’re claiming this can’t happen is beyond me.
If the charger is underpowered the laptop draws from both the battery and the charger at the same time, since the charger cannot provide enough current on its own.
The current does not go through the battery on its way.
Just because it changes from current to chemistry and back doesn’t change age the fact that the laptop is powered from the battery while it’s being charged…. The charger is supplying no power to the laptop, just through the battery. So if current can’t go through the battery… how could it be receiving power…?
Think of it like a water tank connected to a "T" in a hose, when the tank is partially empty some of the water from the hose will go into it, but once the tank is full the water just continues through the hose bypassing the tank entirely.
Once the battery is charged current goes directly from the DC power supply to the laptop electronics, like the example with the hose and tank it just bypasses the battery entirely because the battery is at the same potential as the power supply.
Batteries don't have an 'input' and 'output', they just have a single connection.
I’m just not gonna even address the first parts, that’s only true on some cases as I have pointed out multiple times now, not every device is the same….
…….
All batteries have two connections…. A positive and a negative. You clearly have no idea what you’re talking about here.