Battery Operated Beard Trimmer I Have A Question Regarding Maintenance Of A Beard Trimmer?

I have a question regarding maintenance of a Beard Trimmer? - battery operated beard trimmer

I) a Panasonic ER 240 Clipper (with batteries, not washable, recently bought.It not come with a lubricating oil for lubrication leaves something about the lubrication sheet in the manual.

Is it necessary, be greased with olive leaves?

It is necessary that I must remove the blade after each hair and cheeky little usse?

Please give