Daily Consumption Analysis
Input every appliance and its run time to calculate your precise daily energy needs. This step provides a clear baseline, essential for selecting a battery that meets your actual usage patterns without guesswork. Our calculator breaks down consumption by appliance, showing where your energy goes.
Battery Chemistry Comparison
Understand the differences between lithium-ion, AGM, and other battery types as they relate to your specific requirements. We detail discharge cycles, weight considerations, and overall lifespan, helping you choose the chemistry that aligns with your budget and usage. Make an informed decision tailored to your setup.
Depth of Discharge Factors
Our calculators account for the recommended depth of discharge for each battery type, crucial for extending battery life. This ensures you never draw down your batteries beyond their healthy limits, preserving their capacity and saving replacement costs over time. We help you protect your investment.
Real-World Efficiency & Derate
Factor in real-world variables like temperature, inverter efficiency losses, and Peukert's effect for lead-acid batteries. These often-overlooked details significantly impact usable capacity, and our tools integrate them for a truly accurate sizing recommendation. Get calculations that work in your environment.
How we compare
Common questions
How do these battery calculators account for different climates?
Our interactive battery sizing calculators incorporate real-world factors like temperature coefficients. Batteries perform differently in extreme heat or cold, affecting their usable capacity and charging efficiency. By allowing you to input environmental conditions specific to your travel or parked locations, the tools provide a more realistic estimate, preventing power shortages or damage due to temperature variations. This is especially important for multi-region travel across Australia, the US, Canada, UK, and EU.
Can I use the calculator for both lithium and AGM batteries?
Yes, our battery sizing calculators are designed to support various battery chemistries, including both lithium-ion and AGM (Absorbed Glass Mat). The tools apply specific characteristics and recommendations for each type, such as optimal depth of discharge limits and charging profiles. This ensures that the capacity recommendation is appropriate for the chemistry you choose, helping you maximize battery lifespan and performance, whether you're planning a new build or an upgrade.
What information do I need to get an accurate battery size?
To get the most accurate battery size, you'll need to detail all your electrical loads. This includes listing every appliance you plan to run (lights, fridge, fan, laptop, water pump, etc.), its wattage, and how many hours per day you expect to use it. Additionally, consider your desired 'days of autonomy' (how long you want to run purely on battery without charging) and the typical minimum temperatures your system will experience. The more specific your inputs, the more precise the recommendation.
Do the calculations include inverter efficiency losses?
Our battery sizing calculators are built to incorporate inverter efficiency losses. When DC power from your batteries is converted to AC power by an inverter, a small percentage of energy is lost in the conversion process. Ignoring this can lead to underestimating your actual battery needs. Our tools account for typical inverter efficiencies, providing a more conservative and reliable battery capacity recommendation that reflects real-world energy consumption after conversion.