CPAP overnight baseline
Plan reliable overnight CPAP power
Separate critical overnight energy from optional daytime loads before choosing a battery class.
Scenario assumptionUse the battery runtime tool to test the reserve before adding optional loads.
Planning tool
CPAP overnight: adjust the baseline
Start with the load and conditions you can describe today, then turn the result into a clear component specification brief.
Next decision
Compare this baseline against roof space, seasonal production, and your actual equipment documentation.
Specification checklist
Turn the estimate into checks you can verify.
Use this pre-purchase brief to compare component documentation against the plan you just built.
Battery storage
——Inverter
——Solar array
——Charge controller
—— Before selecting components: verify manufacturer documentation for surge power, BMS discharge and charge limits, PV input voltage, temperature limits, cable sizing, fuses/breakers, mounting, and local requirements.