🔋 Signature Caravan – Solar & Battery in Amps

(All values are approximate, based on 12V equivalent)

1) Daily Power Use (Ah/day @ 12V)

• 12V fridge: 40–60Ah/day

• Lights, pump, phone/iPad: 15–30Ah/day

• Starlink: 35–50Ah/day

• Laptop/TV: 15–40Ah/day

• Induction cooktop (20 min): 35–50Ah/day

• Diesel heater: 10–25Ah/night

Totals:

• Light use: 100–150Ah/day

• Moderate: 160–230Ah/day

• Heavy: 250–330Ah/day

2) Solar Harvest (Ah/day @ 12V)

Rule of thumb: Panel Watts ÷ 12 × 5 peak sun hours × 0.7 efficiency

• 300W solar ≈ 90Ah/day

• 600W solar ≈ 180Ah/day

• 900W solar ≈ 270Ah/day

(On cloudy days, expect 40–60% of these figures.)

3) Battery Capacity (usable in Ah @ 12V)

• 200Ah lithium (12V) ≈ 200Ah usable

• 400Ah lithium (12V) ≈ 400Ah usable

• Signature 48V “10kWh” ≈ ~830Ah @ 12V usable

4) Real-world Scenarios

Kakadu 16 / 18 (48V pack ≈ 830Ah usable, 900W solar ≈ 270Ah/day)

• Light use (120Ah): indefinite – solar easily covers it.

• Moderate (200Ah): solar keeps up (small daily surplus).

• Heavy (300Ah): deficit ~30Ah/day → ~27 days before flat.

• Cloudy (solar ~120Ah/day): deficit ~80–180Ah/day → 5–10 days depending on usage.

Mid Setup (400Ah battery, 600W solar ≈ 180Ah/day)

• Light use (120Ah): solar surplus → indefinite.

• Moderate (200Ah): ~20Ah/day deficit → ~20 days reserve.

• Heavy (300Ah): deficit ~120Ah/day → ~3 days reserve.

Weekender (200Ah battery, 300W solar ≈ 90Ah/day)

• Light use (120Ah): deficit ~30Ah/day → 6 days reserve.

• Moderate (200Ah): deficit ~110Ah/day → ~2 days.

• Heavy (300Ah): deficit ~210Ah/day → less than 1 day (needs alternator/240V help).

⚡ Rule of Thumb

Days off-grid (in amps) ≈
Battery Ah ÷ (Daily Ah use – Daily Ah solar)

• If solar ≥ daily use → indefinite off-grid.

• If solar < daily use → divide battery by the deficit for a rough day count.