Sizing Snapshot
Daily Energy
2320 Wh
Battery Bank
233.5 Ah
Solar Array
633 W
Inverter Baseline
375 W
Solar pSEO Landing
Fridge + CPAP 12V Solar Calculator P4 (5h/1d)
Group 4: estimate daily Wh, battery Ah, and panel watts for Fridge + CPAP at 12V with 5 peak sun hours and 1-day autonomy.
Load Breakdown
| Appliance | Power | Daily Runtime | Wh/Day |
|---|---|---|---|
| Fridge (60W x 24h) | 60 W | 24.00 h | 1440 Wh |
| CPAP (40W x 8h) | 40 W | 8.00 h | 320 Wh |
| Vent Fan (45W x 8h) | 45 W | 8.00 h | 360 Wh |
| LED Lights (40W x 5h) | 40 W | 5.00 h | 200 Wh |
Related Long-Tail Solar Calculators
24V · 3h sun · 1 day 24V · 3h sun · 2 day 24V · 4h sun · 1 day 24V · 4h sun · 2 day 24V · 5h sun · 1 day 24V · 5h sun · 2 day 24V · 6h sun · 1 day 24V · 6h sun · 2 day 48V · 3h sun · 1 day 48V · 3h sun · 2 day 48V · 4h sun · 1 day 48V · 4h sun · 2 day 48V · 5h sun · 1 day 48V · 5h sun · 2 day 48V · 6h sun · 1 day 48V · 6h sun · 2 day 12V · 3h sun · 1 day 12V · 3h sun · 2 day
Sequential Long-Tail Navigation
FAQ
Should I oversize panels or batteries first?
In low-sun conditions, panel oversizing usually improves daily recovery. In high-cloud windows, additional battery autonomy reduces outage risk.
Is LIFEPO4 efficient for this load profile?
Yes, the model applies chemistry-specific assumptions for DoD and charging to keep estimates closer to practical planning ranges.
Can this replace a full electrical audit?
Use this for planning and shortlist decisions, then validate with measured appliance duty cycles and local irradiance history.
12V solar setup: how many battery Ah do I need?
For this load profile, estimated LIFEPO4 bank sizing is 233.5 Ah at 12V with 1-day autonomy.