Describe the bug

I don't know what caused it but I had full cells ( they could be old ones ) and when I used them the power level would be in the negative ranging from -300 to -9k

To Reproduce

Use a charged cell to charge a TARDIS ( base TARDIS charge is set to 10k )

'/tardis version' output

tardis 2988

It does look like this still happens even after the item inventory command and the amount the negative is the power level of the TARDIS for example...

• If the TARDIS has a charge of 4k the cell would be set at -4k