1. System Requirements for 72V 3500W Induction Cooktop (6 Hours Per Day)

1. Cooktop Power:
   • 3500W induction cooktop running for 6 hours per day.
2. Energy Consumption Calculation:
   • Energy required per day (Wh) = Power (W) × Cooking hours (h)
     • 3500W × 6 hours = 21,000Wh (21 kWh) per day.

2. Battery Requirements

1. Battery Voltage:
   • System operates on 72V.
   • Using 12V batteries, they must be connected in series to reach 72V.
2. Battery Capacity Calculation:
   • Required Battery Capacity (Ah) = Total Energy (Wh) ÷ System Voltage (V)
   • 21,000Wh ÷ 72V = 291.67Ah required.
3. Number of Batteries:
   • Each 12V battery has 100Ah capacity.
   • To achieve 72V, batteries are connected in series (6 batteries per set).
   • To reach 300Ah, we need three sets of 6 batteries (total 18 batteries).
4. Battery Cost Calculation:
   • Estimated cost of 12V 100Ah battery = $0.146 per watt.
   • Cost per battery = $0.146 × (12V × 100Ah) = $175.20 USD.
   • Total cost for 18 batteries = $175.20 × 18 = $3,153.60 USD.

3. Solar Panel Requirements

1. Daily Solar Energy Requirement:
   • 21,000Wh per day.
2. Solar Panel Output:
   • Each 200W solar panel generates about 1600Wh per day (200W × 8 hours sunlight).
   • Panels Required = Total Energy / Panel Output
   • 21,000Wh ÷ 1600Wh ≈ 13.1 → Round up to 14 solar panels.
3. Solar Panel Cost Calculation:
   • Each 200W solar panel costs $60 USD.
   • Total cost = 14 × $60 = $840 USD.

4. Charging Controller Requirements

1. Current Calculation for Controller:
   • Required current = Total Power (W) ÷ Voltage (V)
   • 3500W ÷ 72V = 48.61A.
   • A 60A charging controller is recommended.
2. Controller Cost Calculation:
   • Estimated cost of 60A Charging Controller = $20 USD.

5. Cable Requirements and Cost

1. Required Cable Lengths:
   • Solar Panel to Charging Controller = 15 meters.
   • Charging Controller to Battery = 1.5 meters.
   • Battery to Cooktop = 1.5 meters.
   • Total cable required = 18 meters.
2. Cable Cost Calculation:
   • Estimated cost per meter = $1 USD.
   • Total cost = 18 × $1 = $18 USD.

6. Induction Cooktop Cost

• 72V 3500W Induction Cooktop Cost = $150 USD.

7. Total Cost Breakdown (in USD)

Summary

For the 72V 3500W induction cooktop, with 6 hours of cooking per day, the total cost breakdown (in USD) is approximately $4,181.60. This includes:

• 14 Solar Panels (200W each): $840.00
• 18 Acid Batteries (12V, 100Ah each): $3,153.60
• 60A Charging Controller: $20.00
• Cables: $18.00
• Induction Cooktop (72V 3500W): $150.00

This setup ensures sufficient power storage and solar charging for a high-power, eco-friendly cooking solution.