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Energy Capsule
From Medarot S Wiki
Energy capsules refill your energy meter without having to spend a gem or watch an ad.
There are currently two types of energy capsules; a full and a half capsule, which refills your energy by 100% and 50% of its capacity respectively. Like all methods of energy refill, it does not reset it to the maximum, but instead adds the capacity onto itself, which can result in overfills.