DOCOMO PHS 6 units, Junk, 641S642S

Thank you for looking.
These are 6 PHS phones that were used at my father-in-law's company.
They have scratches, cracks, dirt, writing such as numbers on the back of the battery cover, and the rubber covers for the charging ports are almost all cracked due to deterioration.
Some of them are missing the tips of the antennas.
Some of them show a red light when charging, but do not turn blue even after several hours of charging.
When powered on, they display low battery and cannot be operated.
Some of them do not even start charging.
There may be an issue with the main unit itself, but considering their age, I believe they are unusable.
These are old items, so please understand their condition and purchase only if you can agree to no claims and no returns as they are junk items.