Orbital Power & Battery Cycle-Life Simulator

Calculate sunlit solar generation, eclipse battery Depth-of-Discharge (DoD), and multi-year Li-ion capacity retention.

EPS & Orbit Parameters

Total solar surface areacm²

Orbit altitudekm

Solar beta angle β°

Bus quiescent loadmW

TX active powermW

TX duty cycle%

Payload active powermW

Payload duty cycle%

Battery pack capacityWh

Orbit-average generation540 mWSunlit: 59.9 min

Orbit-average load200 mWEclipse: 35.2 min

Net power margin+340 mW

Eclipse battery DoD1.3%

Cycles to 80% SoH163,70029.6 years

3-year capacity retention95.5%