On aliexpress, there is an usbc adapter for the t420 power cable that will allow it to take charge from a 65w powerbank (maybe even 20w). No need to search for

On aliexpress, there is an usbc adapter for the t420 power cable that will allow it to take charge from a 65w powerbank (maybe even 20w). No need to search for battery replacements anymore and can also throw away the original power brick.