How many batteries do I need for a 5kVA inverter?

For an average continuous load of 1000W, you will need one 48V 100Ah lithium battery for 4-5 hours of backup. For 8-10 hours of backup, you will need two batteries. The exact number depends on the specific appliances you intend to power.

What is the difference between 5kW and 5kVA?

In the context of residential solar systems in Zimbabwe, 5kW (kilowatts) and 5kVA (kilovolt-amperes) are used interchangeably to refer to the inverter's power handling capacity. For practical purposes, a 5kW inverter is the same as a 5kVA inverter.

Which battery type is best for a 5kVA solar system?

Lithium-ion batteries are the highly recommended choice for a 5kVA system in Zimbabwe. They offer a much longer lifespan (10-15 years), higher efficiency, and can be discharged more deeply, providing more usable energy and better long-term value compared to lead-acid batteries.

How can I get expert advice for my solar system in Zimbabwe?

Choosing the correct number of batteries and designing a balanced system is critical. For expert advice tailored to your home or business, you can contact a reputable solar company like Sona Solar Zimbabwe for a free consultation and a detailed quote.

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Your Trusted Source for High-Quality, Affordable Solar Solutions.

Need expert Guidance to choose the Perfect Solar System or Solar-Powered Boreholes in Zimbabwe? Chat with our friendly Sona Solar Zimbabwe team on WhatsApp for fast, personalized advice. We typically respond within 30 minutes and Guarantee a reply within one hour.

Home Brand Reviews Featured Solar Solar Accessories Solar Batteries Solar in Zimbabwe Solar Inverters Solar News Solar Panels Solar Protection Devices Solar Quotes Solar Systems Solar Topics How Many 48Volts Batteries Do I Need for a 5000W, 5KW or 5kVA Inverter!

By Sona Brands

On 30, 2023

11,990,689 Views

How Many 48V Batteries for a 5kVA Inverter? (2025 Zimbabwe Guide)

With frequent power outages in Zimbabwe, a solar system is essential. A common question we hear is, "How many 48V batteries do I need for a 5000W inverter?" This guide provides the clear answers you need to build a reliable power backup system.

A modern 5kVA solar inverter and battery system installed in a home.

Your Quick Guide to a 5kVA System

4-5 Hours Backup1 Battery

8-10 Hours Backup2 Batteries

12-15 Hours Backup3 Batteries

16-20 Hours Backup4 Batteries

Estimate for a continuous average load of 1000W. Actual backup time varies with usage.

Lights, TVs, WiFi, Chargers✔ OK

Large Fridge & Deep Freezer✔ OK

Booster Pump✔ OK

Microwave / Kettle (one at a time)✔ OK

Washing Machine✔ OK

Small, Efficient Air Conditioner⚠ Possible

Stove / Geyser❌ No

Understanding the Components

A 5kVA inverter is a powerful device that converts DC electricity from your batteries into usable AC power. Its 5000W rating means it can handle multiple appliances simultaneously, making it a popular choice for Zimbabwean households seeking reliable energy.

For a 5000W inverter, a 48V battery system is the most efficient choice. Higher voltage systems require less electrical current to deliver the same amount of power, which reduces energy lost as heat and allows for thinner, less expensive wiring. A standard 48V 100Ah lithium battery stores about 4,800 watt-hours (Wh) of energy.

Making the Right Choice

Lead-Acid: Cheaper upfront but have a shorter lifespan (2-4 years) and can only be safely discharged to 50% of their capacity, giving you less usable energy.

Lithium-Ion: More expensive initially but are the recommended choice. They last much longer (10-15 years), are more efficient, and allow for deep discharge (80-100%), providing significantly more usable energy and better long-term value.

Frequently Asked Questions

For an average load of 1000W, you need one 48V 100Ah lithium battery for 4-5 hours of backup. For 8-10 hours, you will need two batteries. Your specific needs will depend on the appliances you run.

In the context of home solar systems, kW (kilowatts) and kVA (kilovolt-amperes) are often used interchangeably to describe the inverter's power rating. A 5kW inverter is the same as a 5kVA inverter for most residential purposes.

Lithium-ion batteries are highly recommended for a 5kVA system due to their long lifespan, high efficiency, and deep discharge capability, which provides more reliable power and better value over time.

Choosing the right number of batteries is critical. For expert advice on system design tailored to your home or business, contact Sona Solar Zimbabwe today. We can help you achieve energy independence with a reliable, efficient solar solution.

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Sona Solar Zimbabwe provides premium Solar Panels, Lithium Batteries, Inverters, and complete Solar Systems for homes, businesses, and industries. We also specialize in expert Borehole Drilling Solutions and Solar-Powered Water Systems. Trust our experienced team for professional Solar installations in Harare, Marondera, Mutare, Chitungwiza, and across Zimbabwe, delivering reliable, efficient, and cost-effective renewable energy solutions.