Battery Backup Calculator
Calculate How Long Your Battery Will Last
Get accurate runtime estimates for UPS systems, power banks, and backup batteries
⚡ Battery Specifications
Typical range: 80-95%
🔌 Load Specifications
Recommended: 15-25%
📊 Battery Runtime Results
–
Hours
–
Minutes
–
Total Minutes
–
Energy (Wh)
🔋 Estimated Runtime: –
Results include safety margin and efficiency factors
📋 Calculation Breakdown
Battery Energy: – Wh
Usable Energy: – Wh
Load Power: – W
Efficiency Factor: –%
Safety Margin: –%
Load Factor: –
💡 Recommendations
🎯 How to Use This Calculator
- • Enter your battery’s capacity and voltage
- • Input the power consumption of your devices
- • Select appropriate load type for accuracy
- • Adjust safety margin based on your needs
- • Get instant runtime calculations
⚠️ Important Notes
- • Results are estimates based on ideal conditions
- • Battery age and temperature affect performance
- • Deep discharge can damage some battery types
- • Consider inverter efficiency for AC loads
- • Regular maintenance extends battery life
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