_and_batteries have removable vent caps?

[peterg]

Could you fill in the blank?

 

[ricardo9505]

flux capacitors

 

[Patrick]

Lead and Acid

 

[molitor]

Di-lithium Crystal

 

[michael]

Full maintenance and reduced maintenance. Maintenance free (sealed) batteries have no vent caps.

 

[MichaelS]

Fill in the blanks...home...work!!!

Do it yourself, there are enough dumb "mechanics" in the field already.