What’s the right battery capacity (Ah/Wh), inverter power (W) and solar panel need (W) for your caravan? With this tool, pick your devices from a dropdown list and add them; reference power and durations fill in automatically, and you can edit them if needed. Efficiency and standby draw are also set automatically based on the inverter type you choose (pure sine/modified/premium). The energy generated from the panel power you enter and daily sun hours (PSH) is factored in; daily net consumption, the recommended inverter, the required battery capacity and the installed panel power are calculated instantly. Ideal for off-grid caravan/vanlife energy planning.
1) System & Assumptions
Usable capacity assumption: LiFePO₄ 85%, Li-ion 80%, Gel 55%, AGM 50%
Selecting a profile automatically sets efficiency and idle draw (you can adjust manually if you like).
2) Solar Panel
PSH: typically 4-6 hours in Turkey’s summer season (varies by location/month).
Cable/heat/panel angle losses: typically 0.70-0.80
3) Device List
| Device | Type | Power (W) | Qty | Usage (hours) | Concurrent? | Daily (Wh) | Delete |
|---|
* Items checked “Concurrent?” are assumed to run at the same time and are factored into inverter sizing.
4) Results
Consumption (gross)
0 Wh/day
(includes AC losses + inverter standby)
Solar Generation
0 Wh/day
Panel W × PSH × efficiency
Net Consumption
0 Wh/day
Recommended Inverter
0 W
Peak (surge): 0 W
Panel Recommendation
Installed panel power needed for daily balance: –
Target: daily generation ≈ daily consumption (gross).
Additional needed compared to your current panel: –
Required Battery (gross)
0 Wh total energy
0 Ah @ 12V
Instantaneous DC-side Current (approx.)
Inverter at full load ≈ 0 A
Note: This tool gives a practical estimate. Actual values vary by device label/environment. Use appropriately sized cabling and fuses/protection.
