From the Space.com article
On Aug. 7, the helicopter's six lithium-ion batteries were powered up and charged for the first time in space.
Charging the batteries took eight hours, during which NASA tested and analyzed their performance. The batteries were charged only to 35% of their maximum level, in order to maintain optimal battery health, according to the statement.
On Aug. 7, the helicopter's six lithium-ion batteries were powered up and charged for the first time in space.
Charging the batteries took eight hours, during which NASA tested and analyzed their performance. The batteries were charged only to 35% of their maximum level, in order to maintain optimal battery health, according to the statement.