How Many Solar Batteries Are Needed To Power A House?

Switching to solar power is a great way to save money and ensure a reliable power supply for your home.

But one of the most common questions people ask is: How many solar batteries are needed to power a house?

The answer depends on factors like your energy usage, the type of battery, and whether you want backup power during blackouts.

In this article, we’ll break down how to calculate the number of solar batteries needed to power your house, the types of batteries available, and why solar power is a smart choice.

At Solarman, we provide high-quality solar batteries and complete solar systems tailored to meet your needs.

Why Are Solar Batteries Important?

Solar batteries store the energy generated by your solar panels.

This stored energy can be used at night, during cloudy days, or when there’s a power outage.

Without batteries, your solar system can only provide electricity when the sun is shining.

Benefits of Solar Batteries:

Backup Power: Keep your lights and appliances running during blackouts.
Energy Independence: Reduce reliance on the national grid.
Cost Savings: Use stored energy at night to avoid buying electricity from the grid.
Eco-Friendly: Rely more on renewable energy and reduce your carbon footprint.

How to Calculate the Number of Solar Batteries You Need

To figure out how many solar batteries you need, you first need to determine your energy consumption, battery capacity, and the desired backup duration.

Step 1: Determine Your Daily Energy Usage

Check your electricity bill for your average monthly usage in kilowatt-hours (kWh). Divide this number by 30 to get your daily usage.

For example:

If you use 600 kWh per month, your daily usage is:
600 ÷ 30 = 20 kWh per day

Step 2: Choose the Battery Capacity

Solar battery capacity is measured in kilowatt-hours (kWh).

For example, a 5kWh battery can store 5 kilowatt-hours of electricity.

Step 3: Decide Backup Duration

Do you want power for one day, two days, or longer? Multiply your daily usage by the number of days you want backup power. For example:

If you want 1 day of backup for a house using 20 kWh per day, you’ll need 20 kWh of storage.

Step 4: Calculate the Number of Batteries

Divide your total storage requirement by the capacity of each battery. For instance:

If you use 5kWh batteries and need 20 kWh of storage:
20 ÷ 5 = 4 batteries

What Can Affect the Number of Batteries You Need?

Several factors influence the number of batteries required to power your home:

1. Type of Battery

Different batteries have different capacities and efficiencies.

At Solarman, we offer a variety of options, including:

Gel Batteries: Affordable and durable but with smaller capacities.
Lithium-Ion Batteries: Compact, long-lasting, and highly efficient.

2. Solar Panel Output

If your solar panels generate more energy, you may need fewer batteries because the panels can recharge them quickly.

3. Appliances and Usage

The more appliances you run, the more energy you’ll need. Using energy-efficient appliances can reduce the load on your system.

4. Weather and Sunlight

Areas with more sunlight require fewer batteries, as the panels can recharge them faster.

In Kenya, we enjoy abundant sunshine, making solar power an excellent option.

Example Battery Configurations for Homes

Here are a few examples to help you understand typical battery setups:

Small Household (10 kWh Daily Usage)

Batteries Needed: 2 x 5kWh batteries
Best For: Running lights, a TV, a small fridge, and charging phones.

Medium Household (20 kWh Daily Usage)

Batteries Needed: 4 x 5kWh batteries
Best For: Powering lights, TVs, a fridge, freezer, and a WiFi router.

Large Household (40 kWh Daily Usage)

Batteries Needed: 8 x 5kWh batteries
Best For: Running multiple appliances like a fridge, freezer, washing machine, and home entertainment system.

Types of Solar Batteries Available at Solarman

At Solarman, we offer a range of high-quality solar batteries to suit every need and budget. Here are some of our best options:

Sale!
Solar Battery
SRNE 5kWh Solar Battery
Original price was: KSh 170,000.Current price is: KSh 156,000. Add to cart

SRNE 5kWh 100Ah Solar Battery

Price: KSh 143,000
Features: Durable and efficient, perfect for small to medium households.
Learn More

Sale!
Solar Battery
SRNE 10kWh Solar Battery
Original price was: KSh 300,000.Current price is: KSh 299,000. Add to cart

SRNE 10kWh Lithium Solar Battery

Price: KSh 299,000
Features: Ideal for larger households or businesses needing reliable energy storage.
Learn More

Sale!
Solar Battery
Megatank 5kWh Lithium Battery GL48100 51V
Original price was: KSh 150,000.Current price is: KSh 132,000. Add to cart

Megatank 5kWh Lithium Battery GL48100

Price: KSh 132,000
Features: Affordable and lightweight, great for budget-conscious buyers.
Learn More

Sale!
Solar Battery
Deye 5.12 kWh Lithium Ion Battery
Original price was: KSh 150,000.Current price is: KSh 143,000. Add to cart

Deye 5.12kWh Lithium-Ion Battery

Price: KSh 143,000
Features: Compact and long-lasting, suitable for medium-sized homes.
Learn More

Sale!
Solar Battery
Vestwoods 5.12kWh 48V 100Ah Lithium Battery
Original price was: KSh 150,000.Current price is: KSh 140,000. Add to cart

Vestwoods 5.12kWh Lithium Battery

Price: KSh 140,000
Features: Sleek design, reliable performance, and compatible with most solar systems.
Learn More

Why Buy Solar Batteries from Solarman?

At Solarman, we understand the unique energy needs of Kenyan homes and businesses. Here’s why customers trust us:

Affordable Prices: Competitive pricing without compromising on quality.
High-Quality Products: Durable, efficient batteries built to last.
Expert Guidance: We help you choose the right battery for your home or business.
Professional Installation: Our team ensures your system is set up safely and works perfectly.
After-Sales Support: We provide maintenance tips and are always available for assistance.

How to Maintain Your Solar Batteries

To get the most out of your batteries, follow these simple maintenance tips:

Avoid Overcharging: Use a charge controller to prevent damage.
Monitor Usage: Don’t completely drain the battery, as it can reduce its lifespan.
Store in a Cool Place: Heat can affect battery performance and durability.
Check Connections: Ensure all cables and connectors are secure.

Conclusion

The number of solar batteries you need to power your house depends on your energy usage, the type of battery, and how much backup power you want.

Whether you’re looking for a small setup or a large-scale solution, Solarman has the perfect solar batteries and systems for your needs.

Switching to solar power is not just about saving money—it’s about ensuring energy independence and contributing to a cleaner, greener planet.

FAQs

1. How many solar batteries do I need for my home?
The number depends on your daily energy usage and the battery capacity. For example, a home using 20 kWh daily may need 4 x 5kWh batteries.

2. How long does a solar battery last?
Most lithium-ion solar batteries last 10–15 years with proper care.

3. Can I add more batteries to my solar system later?
Yes, most systems are scalable, allowing you to add more batteries as your energy needs grow.

4. Are solar batteries expensive?
While the upfront cost is higher than traditional batteries, solar batteries save money in the long run by reducing electricity bills.

5. Do solar batteries work during blackouts?
Yes, solar batteries store energy for use during blackouts, ensuring a reliable power supply.