Tubular vs Flat Plate Batteries: Which One Is Better?

Are you facing constant power cuts in your area? Have you decided to buy an inverter to have a relaxed and heat-free summer? But now you will meet the next hurdle – which inverter battery is suitable for your area?

There are three types of inverter batteries – flat plate battery, tubular battery, and gel battery. However, in this article, we will only discuss flat plate and tubular batteries since they are the most common ones in the market. Most people know that tubular batteries are better than flat plate batteries, so we’ll also discuss why it is better.


What Is A Flat Plate Battery?

Flat Plate Battery

This battery is also known as a first-generation or lead-acid battery and is the oldest type of inverter market used. It consists of two flat lead plates (negative and positive plates) immersed in an electrolyte solution (the commonly used solution is sulfuric acid). These plates react with the acid to produce DC voltage.

Even though it is an economical battery, it needs regular maintenance not to get damaged. It has to be replenished with distilled water every three to six months. The maintenance period also depends on your usage. Also, it emits harmful gases when charging and discharging, so it can be kept only in ventilated areas.


  • It is the least expensive inverter battery in the market.
  • It is ideal for places with shorter duration but frequent power cuts.



  • Requires regular maintenance depending on the usage. On average, we have to refill every three to six months.
  • Not ideal for indoor usage as it emits toxic gases; it can be used in well-ventilated areas.
  • It is not good health-wise since it emits harmful gases.
  • Not suitable in places with frequent long-duration power cuts.
  • A flat plate battery does not have a faster rate of charging when compared to a tubular battery.
  • It has a shorter lifespan.


What Is A Tubular Battery?

Tubular Battery

The tubular battery runs on the latest lead-acid battery technology. This is an improved version of the flat plate battery where the positive plates are substituted with tubes made of fiberglass and a cloth covering for protection. This enhances its efficiency, reduces maintenance, provides an uninterrupted power supply, and makes it last longer than a flat plate battery.

Tubular batteries are of two types based on their size – short and tall tubular batteries. A short tubular battery is ideal for smaller homes and has a capacity around 60Ah to 180Ah, whereas the capacity of a tall tubular battery is between 110 Ah and 220 Ah.


  • It is the ideal battery in areas where it is frequent, extender power cuts.
  • It takes lesser time to recharge than a flat plate battery.
  • Does not need frequent refills of distilled water, hence requires low maintenance.
  • Has a longer operational and stand-by life, so it is more reliable than a flat plate battery.
  • Not prone to corrosion or leaks, but it’s eco-friendly.



  • Needs regular water topping, or the inverter gets damaged.
  • More expensive than flat plate batteries.


Difference Between Flat Plate Battery And Tubular Battery

I hope you got a basic idea about the features, pros, and cons of the two types of batteries from the above section. Now, we will look at the difference between flat plate batter and tubular battery.

Sl. No. Difference Flat Plate Battery Tubular Battery
1 Price It is affordable and comparatively cheaper than a tubular battery. A tubular battery is expensive.
2 Electrode type The negative and positive plates are immersed in an electrolyte solution (sulfuric acid). It has negative plates, and instead of the positive plates, this battery uses positive tubes with cloth covering for protection.
3 Battery lifespan and warranty It lasts up to three years. Most brands offer a warranty period of 15-30 months. It lasts longer than a flat plate battery. The lifespan of a tubular battery is up to five years. The warranty period is usually from 36-75 months.
4 Efficiency It is not very efficient as the battery wastes current. It is recommended for small homes and can operate only in specific temperature conditions. Compared to a tubular battery, it takes more time to charge. A tubular battery does not waste a lot of power, so it’s more efficient. It operates consistently even at high temperatures. It also has a faster charging rate.
5 Eco-friendly It is not eco-friendly as it emits toxic gases. Not prone to corrosion or leaks, but it’s more eco-friendly than a flat plate battery.
6 Maintenance Requires regular maintenance depending on the usage. On average, we have to refill every three to six months. It should be kept in a well-ventilated place since it emits harmful gases. It does require regular maintenance but not as frequent as a flat plate battery. Even though it doesn’t emit toxic gases, keeping it in a well-ventilated place is suggested.
7 Suitable for Ideal for places with shorter duration but frequent power cuts. It is the ideal battery in areas where there are frequent, extender power cuts.


Also Read:

How To Choose A Battery For Inverter?



On the whole, a tubular battery is better than a flat plate battery. It is efficient, doesn’t require a lot of maintenance, and has a longer lifespan. However, if you live in a place with frequent power cuts of short duration, it is better to buy a flat plate battery.

Please comment and let us know if you found this article helpful.

Founder at Best Indian | Website | + posts

I am tech writer who is passionate about technology and spearheads the core writing team on tech news

Leave a Comment