RV living and off-grid energy · CalculatorOff Grid Solar Battery Calculator
Off Grid Solar Battery Calculator
without the guesswork.
Off Grid Solar Battery Autonomy Calculator — Estimate off-grid battery autonomy from capacity and daily load. Uses a focused calculator with visible assumptions. Inputs stay in your browser.
Reference toolOff Grid Solar Battery Autonomy CalculatorEstimate off-grid battery autonomy from capacity and daily load. Inputs stay in your browser.
Reference calculation
Your result
2 days
Divide usable battery energy by daily consumption to estimate ideal autonomy.
Battery capacity10 kWh
Usable energy8 kWh
Daily load4 kWh
Ideal autonomy2 days
Read before relying
Context matters.
- Inverter losses, temperature, battery age, surge loads and reserve settings reduce real-world autonomy.
Rule set 1.1.0
VerifiedSources & scope
This page shows the source trail, jurisdiction and review date alongside the result. Always confirm time-sensitive rules with the linked authority.
JurisdictionUser-provided values — verify local or contractual assumptions
Review date2027-02-21
PrivacyNo input upload
Questions answered
What to know before using the result.
How is battery autonomy calculated?
Usable battery energy is divided by average daily energy use.
Does the result include inverter losses?
Only if you reduce the usable-capacity input to account for them. The headline is an idealized estimate.
What other factors reduce real autonomy?
Temperature, battery age, surge loads, reserve settings and changes in daily consumption can all shorten it.