Answer:

topup

Answer	Crossword Clue
TOPUP	Refresh, as a cup of coffee
TOPUP	Refill to the brim
TOPUP	Replenish a pint of ale, say

TOPUP	Freshen, as a drink
TOPUP	Replenish, in London
TOPUP	Convertible driver's option
TOPUP	Refill when you don't really need to
TOPUP	Convertible setting
TOPUP	Fill to the brim, in a pub
TOPUP	Give a refill
TOPUP	Bring to a full amount