Choosing the Right Inverter Size for Your Home

Find the right inverter size for your home with our easy-to-use calculator. Discover optimal battery size and solar panel compatibility for efficient energy use.
SHOP IN-STORE
Explore Inverters
SHOP IN-STORE
3 min
3-March-2025
Finding the right inverter size for a small home depends on power consumption, battery capacity, and solar panel compatibility. Start by calculating the total wattage of appliances you need during a power outage. A 900VA to 1500VA inverter is usually sufficient for a small home. Choosing the correct battery size, typically 150Ah or 200Ah, ensures longer backup. For solar compatibility, match the inverter with a solar panel system.

Browse a selection of inverters on Bajaj Mall. Choose from top brands, compare features, and select the ideal model for your needs. Once you have made your decision, visit any of Bajaj Finserv's 1.5 lakh partner stores across 4,000 cities in India to complete your purchase. With Bajaj Finserv's financing options, you can buy your fridges on Easy EMIs, making the purchase more affordable and convenient. Enjoy a seamless shopping experience and bring home a high-quality refrigerator without worrying about the upfront cost.

Understanding home inverter needs

Selecting the right home inverter is crucial to ensuring an uninterrupted power supply during outages. The choice depends on factors such as power requirements, inverter type, and battery capacity. A sine wave inverter is ideal for sensitive electronics, whereas square wave inverters are more affordable but may cause noise and inefficiency. Assessing the total wattage of appliances helps determine the required inverter capacity. Battery backup time is another essential consideration, calculated based on power consumption and battery efficiency. Proper maintenance and ventilation also extend the inverter's lifespan.

Checklist for choosing a home inverter

  • Identify power needs: Calculate the total wattage of essential appliances.
  • Choose the inverter type: Compare square wave vs sine wave inverters.
  • Battery capacity: Select based on backup time and energy consumption.
  • Installation and maintenance: Ensure proper ventilation and regular servicing.
  • Brand comparison: Review features and warranty options.

Discover square wave vs sine wave inverters to choose the best option for your power needs.

Calculating battery size for home inverters

Determining the right battery size is essential for ensuring optimal inverter performance. Follow these steps to calculate the required battery capacity:

  • Calculate power consumption: List essential devices and their wattage.
  • Determine backup duration: Decide how long the inverter should provide power.
  • Compute battery capacity:
  • Use the formula: Battery Capacity (Ah) = (Total Load in Watts × Backup Hours) / (Battery Voltage × Efficiency Factor)
  • Select battery type: Choose between lead acid, lithium ion, or tubular batteries.
  • Consider depth of discharge (DoD): Batteries should not be discharged beyond their recommended DoD for longevity.
  • Verify compatibility: Ensure that the battery matches inverter specifications.

Learn about what is a solar inverter and how it works to convert solar energy into usable power for your home and enhance system efficiency.

Using an inverter calculator for solar panels

An inverter calculator helps homeowners determine the ideal inverter size based on their solar panel system. Follow these steps:

  • Input power requirements: Enter the total wattage of the devices to be powered.
  • Enter battery details: Include voltage, type, and backup duration.
  • Solar panel specifications: Provide panel wattage and expected sunlight hours.
  • Inverter efficiency: Factor in efficiency ratings to determine optimal capacity.
  • Review recommendations: The calculator provides suitable inverter and battery options.

Using an inverter calculator simplifies decision making by automating complex calculations and providing precise recommendations for an efficient solar power setup.

Explore the features, benefits, and efficiency of V-Guard UPS inverters for uninterrupted power backup.

If you are looking to invest in an inverter, Bajaj Finserv offers Easy EMI options on a ton of electronics, gadgets, home appliances and more. You simply need to visit one of our partner stores, select the model of your choice and convert the cost into Easy EMIs. You can choose to repay it in a convenient tenure of up to 60 months. This financing solution from Bajaj Finserv is available on 1 million products.

Explore inverters on Easy EMI with Bajaj Finserv

Check inverter attributes and in-depth specifications on Bajaj Mall. Once you have gathered all the necessary details, visit the nearest Bajaj Finserv partner store to pick your preferred inverters. Complete your purchases with Bajaj Finserv’s financing options, making shopping more convenient and affordable. You have the flexibility to pick a repayment period that fits your budget, allowing for Easy EMI payments. Bajaj Finserv also offers financing solutions for electronic purchases.

Benefits of shopping with Bajaj Finserv’s financing options

  • Affordable pricing: Get the best deal on an inverter at Bajaj Finserv partner stores, allowing you to enjoy quality at a price that fits your budget.
  • Easy EMIs: Purchasing your inverter has never been easier. Bajaj Finserv offers Easy EMIs, letting you spread your payments comfortably over time.
  • Zero down payment: Take home your desired inverter today with zero down payment and start enjoying it without worrying about upfront costs.
  • Wide range and accessibility: Explore a comprehensive collection of inverters at Bajaj Finserv’s partner locations, giving you extra savings.
  • Free home delivery available: Get complimentary home delivery on select inverter models for a hassle-free shopping experience.

Inverters

Brands

Bajaj Finserv App for all your financial needs and goals

Trusted by 50 million+ customers in India, Bajaj Finserv App is a one-stop solution for all your financial needs and goals.

You can use the Bajaj Finserv App to:

Apply for loans online, such as Instant Personal Loan, Home Loan, Business Loan, Gold Loan, and more.

  • Explore and apply for co-branded credit cards online.
  • Invest in fixed deposits and mutual funds on the app.
  • Choose from multiple insurance for your health, motor and even pocket insurance, from various insurance providers.
  • Pay and manage your bills and recharges using the BBPS platform. Use Bajaj Pay and Bajaj Wallet for quick and simple money transfers and transactions.
  • Apply for Insta EMI Card and get a pre-approved limit on the app. Explore over 1 million products on the app that can be purchased from a partner store on Easy EMIs.
  • Shop from over 100+ brand partners that offer a diverse range of products and services.
  • Use specialised tools like EMI calculators, SIP Calculators
  • Check your credit score, download loan statements, and even get quick customer support—all on the app.
Download the Bajaj Finserv App today and experience the convenience of managing your finances on one app.

Do more with the Bajaj Finserv App!

UPI, Wallet, Loans, Investments, Cards, Shopping and more

GET THE APP

Disclaimer

1. Bajaj Finance Limited (“BFL”) is a Non-Banking Finance Company (NBFC) and Prepaid Payment Instrument Issuer offering financial services viz., loans, deposits, Bajaj Pay Wallet, Bajaj Pay UPI, bill payments and third-party wealth management products. The details mentioned in the respective product/ service document shall prevail in case of any inconsistency with respect to the information referring to BFL products and services on this page. 

2. All other information, such as, the images, facts, statistics etc. (“information”) that are in addition to the details mentioned in the BFL’s product/ service document and which are being displayed on this page only depicts the summary of the information sourced from the public domain. The said information is neither owned by BFL nor it is to the exclusive knowledge of BFL. There may be inadvertent inaccuracies or typographical errors or delays in updating the said information. Hence, users are advised to independently exercise diligence by verifying complete information, including by consulting experts, if any. Users shall be the sole owner of the decision taken, if any, about suitability of the same.

Frequently asked questions

Can I run heavy appliances like a refrigerator or AC on a small inverter?
Running heavy appliances like a refrigerator or air conditioner on a small inverter is generally not recommended. Small inverters usually have a lower wattage capacity, typically ranging from 300W to 1000W, which may not be sufficient for high-power appliances.

How much power does an inverter consume?
An inverter itself consumes a small amount of power to operate, typically 5 10% of the total power output, which accounts for conversion losses. The total power consumption depends on the connected load and the inverter's efficiency. For example, if an inverter is powering a 200W load, the actual power drawn from the battery may be around 220W or 230W due to energy losses.

How long will an inverter last during a power outage?
The backup duration of an inverter during a power outage depends on the battery capacity (Ah), the power consumption of connected devices, and the inverter efficiency. The general formula to estimate runtime is:

Backup Time (hours) = Battery Capacity (Ah) × Battery Voltage (V) × Efficiency / Load (W)

For example, a 150Ah battery with a 12V system running a 300W load at 85% efficiency would last approximately 5 hours. However, running high-power appliances will drain the battery much faster.

Show More Show Less

Related videos