Covenant recharge station
From Halopedia, the Halo wiki
Covenant recharge stations are a piece of battlefield logistics equipment utilized by Covenant ground forces. They serve as generators capable of recharging the Covenant's various plasma batteries, which are used to power almost anything smaller than the full-scale pinch fusion reactors found inside spacecraft and citadels.
Covenant recharge stations are typically used to recharge a specific type of large, cylindrical cell, which is placed on top of the station for the duration of the process. One or more such cells, along with other Covenant field equipment such as plasma batteries, are also commonly found amongst recharge stations.
A recharge station on Installation 05 in Halo 2.
Two Sangheili Minors next to a recharge station in Halo 2.
Concept art for a redesigned recharge station in Halo 2: Anniversary.
A recharge station on Installation 05 in Halo 2: Anniversary.
A recharge station alongside two Sangheili on Installation 05 in Halo 2: Anniversary.