Sizing Snapshot
Daily Energy
1607 Wh
Battery Bank
161.7 Ah
Solar Array
438 W
Inverter Baseline
1250 W
Solar pSEO Landing
60W Fridge + 1000W Microwave 12V Solar Battery Calculator (5 Sun Hours, 1-Day Backup)
Calculate daily Wh, LiFePO4 battery Ah, and solar panel watts for 12V off-grid systems using a 5h solar window and 1-day autonomy target.
Load Breakdown
| Appliance | Power | Daily Runtime | Wh/Day |
|---|---|---|---|
| Fridge (60W x 24h) | 60 W | 24.00 h | 1440 Wh |
| Microwave (1000W x 10m) | 1000 W | 0.17 h | 167 Wh |
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FAQ
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 161.7 Ah at 12V with 1-day autonomy.
How many watts of solar panels are required for 5 peak sun hours?
The calculator estimates 438 W panel capacity after charge and derate factors.
Why does lower battery voltage usually require higher Ah?
For the same energy demand, lower voltage systems need more current. That translates into larger Ah requirements and often thicker cabling.