Inverter for Home with Battery 12 Hours Backup in India 2026

06 December 2025

When I talk to homeowners and business owners across India, one question consistently comes up: “Which inverter and battery combination can give a reliable 12-hour backup?”
With power cuts still a challenge in many regions—even in 2026—choosing the right inverter for home has become more important than ever. As part of Lento’s mission to simplify power solutions, I decided to create this complete guide based on real-world performance, load requirements, battery technologies, and cost considerations.

Throughout this guide, I’ll also touch upon why brands like Lento, known as an online ups manufacturer, online ups supplier, and online ups trader, are trusted across India.

Let’s dive deep into everything you need to know about getting a true 12-hour backup inverter system for home use.

Understanding the Need for 12-Hour Backup in India

In many Indian households—especially in tier-2 and tier-3 cities—power cuts can last anywhere from 2 to 10 hours. In some rural areas, outages stretch even longer. That’s exactly why more homeowners are upgrading to stronger inverter–battery systems that ensure comfort, safety, and uninterrupted living.

A 12-hour backup system is ideal for:

Homes with moderate to heavy load requirements
Small offices
Shops and clinics
Remote or rural properties
Homes using solar or planning to upgrade later

A long-backup inverter is not just a convenience—it’s peace of mind.

How Much Load Can a 12-Hour Backup Inverter Handle?

Before selecting the inverter, you need to estimate your home’s power load. This helps you calculate the right inverter and battery capacity.

Typical Appliances for 12-Hour Backup

Most homes want to run this combination during outages:

4–6 LED lights
3–4 ceiling fans
1 LED TV
Wi-Fi router
Laptop or computer
Mobile chargers
Occasional use of mixer or small appliances

To support this for 12 hours, you usually need:

Inverter Size: 900VA to 1500VA
Battery: 150Ah–220Ah, single or double depending on total load

But for heavier usage (like refrigerators or personal computers), you may require:

Inverter: 2kVA–3kVA
Battery Bank: 2 × 200Ah batteries

This is where analysing your load becomes crucial.

Battery Capacity Required for 12-Hour Backup

To achieve 12 hours of continuous backup, the battery capacity is more important than inverter size.

General Backup Formula

Backup Time = (Battery Voltage × Battery Ah × Efficiency) ÷ Load in Watts

On average, a 150Ah battery gives 4–6 hours, depending on load.

For 12 hours, you typically need:

200Ah battery for light loads (200–300W)
2 × 200Ah batteries for medium loads (400–700W)

This is why many users pair a Lento 150Ah or 200Ah solar/inverter battery with 900VA–2000VA inverters.

Best Inverter–Battery Combination for 12-Hour Backup in 2026

Over the years, I’ve compared dozens of systems. Based on performance and user preference, here are the best combinations:

Light Load (200W–300W)

Inverter: 900VA or 1100VA
Battery: 150Ah or 200Ah single battery
Backup: 10–14 hours

Medium Load (400W–700W)

Inverter: 1500VA or 2kVA
Battery: 2 × 150Ah or 2 × 200Ah
Backup: 10–12 hours

Heavy Load (800W–1200W)

Inverter: 3kVA solar hybrid
Battery: 2 × 200Ah tubular batteries
Backup: 8–12 hours depending on usage

Lento’s high-efficiency inverters make these combinations even more reliable because of their pure sine wave output, lower battery consumption, and robust build quality.

Why Lento Inverter–Battery Systems Are Preferred in 2026

As an online ups manufacturer, online ups supplier, and online ups trader, Lento has built a reputation for long-lasting, efficient, and stable power solutions.

Here’s why our inverter–battery systems stand out:

1. Pure Sine Wave Technology

Your appliances run smoother, with no noise or heating issues.

2. Longer Battery Life

Our inverters are engineered for optimal charging cycles, which significantly extend battery lifespan.

3. Solar-Ready Options

You can connect solar panels anytime to reduce electricity bills.

4. Heavy-Duty Performance

Even under long outages, Lento systems maintain stable backup without fluctuations.

5. Trusted by Homes & Businesses

From small shops to large households, Lento systems are known for reliability.

Types of Batteries for 12-Hour Backup

Choosing the right battery is as important as selecting the inverter.

1. Tubular Batteries (Most Recommended)

Long life
Ideal for long power cuts
Suitable for heavy load backup
Best compatible with Lento inverters

2. SMF/VRLA Batteries

Maintenance-free
Clean and convenient
Shorter backup compared to tubular

3. Lithium Batteries (Premium Option)

Highest efficiency
Fast charging
Lightweight and long-lasting
Best for modern homes or modular setups

For a true 12-hour backup, tubular batteries remain the best value option in 2026.

Inverter for Home with Battery Price in India 2026

Prices vary based on capacity, technology, and brand. Here is the general price range:

Inverter Price Range (2026)

900VA – 1100VA: ₹6,000 – ₹10,000
1500VA – 2kVA: ₹12,000 – ₹25,000
3kVA – 5kVA: ₹28,000 – ₹60,000

Battery Price Range (2026)

150Ah Tubular: ₹12,000 – ₹17,000
200Ah Tubular: ₹16,000 – ₹25,000
Lithium Battery: ₹35,000 – ₹75,000 depending on capacity

Complete 12-Hour Backup System Cost

Depending on load and battery size, a full setup may cost:

₹22,000 – ₹55,000 (Light Load)
₹45,000 – ₹90,000 (Medium Load)
₹85,000 – ₹1,50,000 (Heavy Load with solar-ready design)

Lento systems fall within these ranges and provide excellent long-term value.

Solar + Inverter + Battery Setup for 12 Hours

Many homeowners in 2026 prefer solar-enabled systems to reduce electricity bills.

A hybrid solar inverter solution from Lento gives:

Continuous backup
Lower monthly bills
Faster battery charging
Higher lifespan

This is one of the most efficient setups for homes with regular power cuts.

Maintenance Tips for 12-Hour Backup Systems

To keep your inverter and battery running efficiently:

Keep battery water above minimum levels
Place the battery in a ventilated area
Avoid overloading your inverter
Use appliances responsibly during outages
Clean terminals regularly
Charge the battery fully before first use

These simple habits can add years to your system’s lifespan.

Lento India – Global B2B Solar Exporter

Lento India proudly exports solar and power solutions to 24 countries including Mexico, Chile, Peru, Ecuador, Dominican Republic, Afghanistan, Nigeria, Iraq, Uganda, Yemen, Syria, Iran, Oman, Morocco, Egypt, and Kuwait.

We supply solar panels, tubular batteries, SMF batteries, inverters, and Online UPS systems to global distributors, OEMs, and large-scale installers.

If you are a business owner, project developer, or distributor, we welcome you to partner with us for bulk supply opportunities.
Simply share your requirements by our contact form, and our export team will connect with you within 24 hours to discuss pricing, customization, and logistics.

Lento India – Powering industries, homes, and communities across continents with trust and technology.

Conclusion: Choose the Right Backup System for Peace of Mind

A 12-hour inverter–battery backup is no longer a luxury—it’s a necessity for many Indian homes in 2026. Whether you choose tubular or lithium, a 900VA or a heavy-duty 3kVA system, the key is investing in quality products that deliver reliable power.

Lento, being a trusted online ups manufacturer, online ups supplier, and online ups trader, continues to offer durable, high-performance inverter systems that meet the needs of modern Indian households.

If you are looking for the best long-backup solution for your home or business, Lento has the perfect system for you.

FAQ – Inverter for Home with 12-Hour Backup

1. Can a 150Ah battery run for 12 hours?

Yes, but only on a low load (200–250W). For higher loads, a 200Ah or dual-battery setup is better.

2. What inverter size is best for a typical home?

A 900VA–1500VA inverter is enough for most households with basic appliances.

3. Does a solar inverter reduce electricity bills?

Yes. It charges the battery using sunlight, reducing dependence on grid electricity.

4. Which battery is best for long backup?

Tubular batteries offer the best performance for long power cuts. Lithium is premium but more expensive.