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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Battery boosts:

JUMPSTART: Car battery boost
JUMPSTART: Battery boost ... and what the first part of the answers to starred clues can literally be
JUMPSTART: Weak-battery boost
JUMPSTART: Battery boost
RECHARGES: Battery boosts
RECHARGE: Boost the battery
DEAD: Needing a boost, as a battery
DEAD: Like a battery in need of a boost