I don’t have the time to read through the other comments, but I’ll leave my tidbit of knowledge in case someone missed something:

Do not even BEGIN to attempt to power it/charge it until it’s been at room temperature for a good long while.

Charging lipos while cold is dangerous to a surprising extent. (Never charge a phone that’s frozen, like from being out during winter. Wait for it to heat up first.)

Charging lipos that were overdischarged is also, not exactly safe.

When you eventually (after a loooong dryout) get to trying to power it up, do it with the slowest charging (lowest power) adapter possible. The slower you charge it the less explodey it will be.

The charging circuit may be shorted out (and the noise might be high load coil whine), which would be very dangerous. Dispose of it.

I will describe one possible source of your issue (but there are others).

There are two sizes for files on a disk. “Size” and “Size on disk”.

There is something called the “allocation unit size”. If your disk is set up (formatted) to have a 4kB allocation unit size, then space for files will be allocated in multiples of 4kB. This means that a 1kB file and a 4kB file will both use 4kB on the disk. A 5kB, 6kB and 8kB will use 8kB, etc.

There are other allocation unit sizes. They go between bytes and Megabytes. It matters for performance reasons. Larger is faster to an extent, but it will cause over-allocation if you have lots of small files.