Power cuts are still common in many parts of India due to high demand, developing infrastructure, maintenance, and similar reasons. Due to this, most homes depend upon inverters for backup electricity to power fans, lights, and small appliances for a couple of hours. The inverter battery stores power for about 3-5 hours on medium load usage, and this much backup is usually enough, as power cuts are usually of short period these days.

As you are using an inverter for home, it is mandatory to follow a maintenance routine to ensure a prolonged lifespan of the inverter battery. A home inverter battery typically lasts between 3 and 5 years, but it can last longer if you do the due diligence promptly. We have seen many houses where inverter batteries lasted for around 8 years.

Here, we will talk about some easy and practical tips to extend the lifespan of your home inverter battery. Let’s begin –

1. Avoid Overloading the Inverter

The most common pattern that we observe with a failed inverter and battery is overload usage. When there are too many appliances connected to the inverter and used at the same time, there is a certain load exceeding the rated limit. In this situation, your home inverter tries to deliver the required power and drain the battery at a faster rate. This thing alone not only harms your inverter, but also the battery. If you have a regular inverter for home and are using appliances like –

  • Mixer/Grinder
  • Kitchen Chimney
  • Hair Dryer
  • Heater
  • Curling Iron
  • Hair Straightener
  • Air Conditioner
  • Water Pump

Using these appliances even for a short span causes your battery to degrade faster. Even your inverter battery heats up when used for a prolonged time, and it will increase the risk of battery swelling as well.

If you are dealing with power cuts often, then try to stick to running only essential appliances like:

  • Lights
  • Fans
  • Wi-Fi Router
  • Television
  • Small electronics like phones and laptops

By following this simple rule, you can expect a better lifespan for your inverter and battery.

2. Keep the Battery in a Cool and Ventilated Area

People who keep their inverter in sunlight or a poorly ventilated area deal with issues like battery efficiency and damaged internal components. This issue occurs due to heat, as temperature plays a key role in battery health. If you are buying an inverter for home, then always place the battery in a location that has:

  • Proper Airflow
  • Shade from Direct Sunlight
  • Low Humidity

As seen in many Indian homes, people place batteries in closed cabinets to hide the mess. This method may look good, but the ventilation part suffers in this. So, if you want to put your inverter and battery in a cabinet, then you should have a ventilation grill on every side of the cabinet.

3. Check Water Level Regularly

Most Indian homes have lead-acid batteries, which require distilled water to function properly. Over time, when you use the inverter, the water level drops due to charging cycles. The water level reduces faster during the summer months when power cuts are common.

Make sure to buy a gallon of distilled water so you have it readily available for every refill. Checking the water level every two months is the best practice. Make sure that you follow the instruction manual while refilling the battery to understand the right method.

Some people use tap water for refills, and it is a big mistake to avoid. Your house tap water contains minerals that start reacting with lead and reduce its efficiency faster than you can expect. The battery warranty also voids if the manufacturer traces minerals or uses tap water.

4. Cleaning Battery Terminals

If you are buying an inverter for home or you already have an inverter, keeping the battery terminals clean is essential for the highest efficiency. As time passes, corrosion and carbon deposits on battery terminals increase resistance, causing a lesser output. Resistance heats the battery and puts extra load on the inverter, which harms the battery and many components of the inverter.

The easiest way to clean battery terminals is:

  • Start by inspecting the terminals occasionally.
  • If you notice corrosion, then clean the area gently with a dry cloth and a soft brush.
  • If you notice excessive corrosion, then calling a professional is better.

Professionals usually disconnect the inverter from the battery terminals, clean it with vinegar or chemicals for the best results.

Bonus Tip: Using petroleum jelly on the terminals usually helps in reducing corrosion.

5. Avoid Deep Discharge and Charge to Max in One Go

Deep discharge is a term used for a situation where the battery gets completely drained before charging again. Deep discharge is the biggest culprit in harming battery health. This rule applies to every type of battery, whether you have a lead-acid battery, a Li-ion battery, or a solid-state battery. Deep discharge results in degradation of the battery, and it affects the charging capacity.

Additionally, make sure the inverter system charges the battery fully after a power cut. Battery performance enhances as it receives proper charging in one go. Frequent partial charging affects its long-term performance.

6. Use the Right Type of Battery

When you go to buy an inverter for home, you focus on the desired capacity and output, but have you wondered the same for batteries as well? Not all batteries are the same. Some batteries are designed to offer heavy backup usage, while some are meant for light loads. Choosing the right battery is important. Most Indian homes have Tubular batteries because these batteries handle long power cuts better. Moreover, these batteries are widely available, come at an affordable price, and are highly reliable in most use case scenarios.

7. Battery Inspection

As you buy the battery and inverter for home, you can take a breath of relief for quite a time. However, doing a proper battery inspection every few months will help increase the battery lifespan. Check for the following during every battery inspection:

If you notice any of the following issues, contacting the technician is the perfect choice in this scenario. Early detection can prevent bigger problems.

Final Thoughts

Keeping the battery clean and turning off the inverter when not in use for a long time is the best practice for the best performance. The inverter battery is the costliest and the most important part of a home power backup system. Most batteries last for 3-5 years, but if you follow the given tips, you can extend the battery life significantly.