Battery Capacity Calculator

The Battery Capacity Calculator is a scientifically accurate, interactive tool that computes **usable capacity (Ah)**, **energy (Wh)**, **runtime**, and **Peukert-adjusted capacity** for lead-acid, lithium, and solar batteries. Based on peer-reviewed electrochemical models, IEEE standards, and Peukert’s Law, it accounts for **depth of discharge (DoD)**, **efficiency**, and **discharge rate**. Whether you're sizing solar systems for greenhouses, powering electric tractors, or teaching energy storage, this calculator delivers precision and insight. Discover sustainable power solutions at Agri Care Hub.

What is Battery Capacity?

**Battery capacity** is the amount of electric charge a battery can deliver at a specific voltage. It is expressed in:

• Ampere-hours (Ah): Charge (C = I × t)
• Watt-hours (Wh): Energy (E = V × Ah)

Real-world capacity depends on discharge rate, temperature, and DoD. Learn more on Battery Capacity ScienceDirect.

Scientific Foundation: Peukert’s Law

At high discharge rates, effective capacity decreases:

Where k = Peukert exponent (1.1–1.3 for lead-acid, ~1.05 for Li-ion)

Runtime:

Importance of Battery Sizing

Critical in:

• Solar Farms: Off-grid irrigation
• Electric Vehicles: Tractors, drones
• Backup Power: Greenhouses, cold storage
• IoT Sensors: Soil monitoring
• Cost Optimization: Avoid oversizing

In agriculture, proper sizing reduces waste and cost — a focus at Agri Care Hub.

User Guidelines

Steps:

1. Enter battery voltage (V)
2. Enter load current (A)
3. Enter rated capacity (Ah)
4. Set DoD, Peukert, and efficiency
5. Click “Calculate Battery Capacity”

DoD > 50% shortens battery life

When and Why to Use

Use when you need to:

• Size solar battery for 3-day autonomy
• Predict drone flight time
• Optimize UPS for milking machines
• Teach energy storage
• Reduce farm energy costs

Purpose of the Calculator

To make battery planning accurate and effortless. It applies Peukert’s Law, warns on deep discharge, and supports sustainable energy design.

Typical Values

• Lead-acid: k = 1.25, DoD = 50%
• LiFePO4: k = 1.05, DoD = 80%
• 100 Ah @ 1A → 100h, @ 10A → ~80h (Peukert)

Applications in Agriculture

Battery sizing enables:

• Solar-powered water pumps
• Electric fencing
• Automated feeding systems
• Weather station backup

Learn more at Agri Care Hub.

Scientific Validation

Based on:

• IEEE Std 485 (Lead-acid sizing)
• Peukert (1897)
• USABC Battery Test Manual
• Peer-reviewed studies on Battery Capacity

Benefits

• 100% accurate
• Peukert & DoD included
• Mobile-friendly
• No login
• SEO-optimized

Conclusion

The Battery Capacity Calculator is your essential tool for energy storage. From solar farms to electric tools, it ensures reliability and efficiency. Start calculating today and power the future of farming with Agri Care Hub.