Inverter Battery Calculator Nigeria — Size Your Backup System
Calculate the right inverter size and number of batteries for your Nigerian home or office. Get recommended kVA, Ah capacity, and cost estimates.
Your Appliances
hrs
0W
Total Load
0 kVA
Recommended Inverter
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Number of Batteries
₦0
Estimated Cost
System Summary
| Component | Specification | Est. Cost |
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How the Calculation Works
- Total Load = Sum of (Wattage × Quantity) for all selected appliances
- Inverter kVA = Total load × 1.25 surge factor ÷ 1000
- Battery Ah needed = (Total Watts × Backup Hours) ÷ (Voltage × DoD)
- Number of batteries = Required Ah ÷ Single battery Ah, rounded up
Frequently Asked Questions
How do I choose the right inverter size in Nigeria?
Add up the wattage of all appliances you want to run simultaneously. Multiply by 1.25 to account for startup surge (especially fridges and pumps). The result in watts, divided by 1000, gives you the minimum kVA rating. For a 1,200W total load, you need at least a 1.5kVA inverter.
How many batteries do I need for my inverter?
Battery capacity depends on how long you need backup and your total load. Formula: Battery Ah = (Total Watts × Backup Hours) ÷ (Battery Voltage × Depth of Discharge). For 12V batteries at 50% DoD: a 1,000W load for 5 hours needs (1000 × 5) ÷ (12 × 0.5) = 833Ah minimum.
What is the difference between 12V and 24V battery systems?
A 24V system uses less current for the same power, meaning thinner cables, less heat, and greater efficiency. For systems above 2kVA, a 24V or 48V battery bank is recommended. For small home systems under 1.5kVA, 12V is common and simpler.
Which inverter brands are best in Nigeria?
Popular and trusted brands in Nigeria include: Victron Energy (premium), Luminous (value), Felicity Solar, Simba Power, Genus, and Sukam. Always buy from authorised dealers to ensure warranty support.