Arcane Battery

Arcane Battery is an Arcane Enhancement for Warframes that increases maximum energy per point of armor, up to 1,000 additional energy.

Effect[]

Rank	Maximum Energy per Armor Point	Armor needed to Cap
0	0.05	20000
1	0.10	10000
2	0.15	6667
3	0.20	5000
4	0.25	4000
5	0.30	3334

Acquisition

Arcane Battery can be obtained from Ascension's optional Sister of Parvos, summoned by acquiring 3 Sister Beacons during the elevator ride. Alternatively it can be purchased from Ordis in the Drifter's Camp for 10 Vestigial Motes, for a total of 210 for max rank.

Item	Source	Chance	Expected	Nearly Guaranteed
	Sisters of Parvos (Ascension Hard Mode)	20%	~ 5 Kills	30 ± 10 Kills
	Sisters of Parvos (Ascension Mode)	6.60%	~ 15 Kills	101 ± 33 Kills

All drop rates data is obtained from DE's official drop tables stored on Module:DropTables/data. See Mission Rewards#Standard Missions for definitions on reward table rotations.
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Notes[]

Maximum energy changes dynamically based on any changes to armor.
- As such, being inflicted with a Corrosive or Heat status effect will remove armor and some of your bonus energy, requiring you to regain it.
  - Heat procs are far more common and more deadly, as they will remove up to half of your total armor while burning.
When combined with Preparation or similar effects, the increased energy maximum is applied first, resulting in a higher starting energy as well.