Unik Techno • April 18, 2024

Solar Batteries for Factories— A Step Towards Reducing Industrial Carbon Footprint

Every April, World Earth Day reminds us of our responsibility to protect the planet. This year, addressing climate change is more critical than ever as global average surface air temperatures for March (2024) hit a record high of 14.14 degrees. According to the International Energy Agency, industrial emissions are at an all-time high, at a staggering 37.4 billion tones (in 2023). 


Solar power represents a significant opportunity for manufacturers to reduce their environmental impact with lower carbon emissions and dependence on fossil fuels. 


At UNIK we have been exploring how integrating solar batteries into your facility's solar voltaic (PV) system can be a significant step towards a more sustainable future. 


Why Choose Solar Energy Systems for Your Industries? 

 

Beyond reducing their carbon footprint and boosting sustainability, solar energy systems for industries offer many advantages, especially in tropical nations like India. These regions bathe in year-round sunshine, making solar power a future-proof, long-term investment. 


While the upfront cost of installing photo-voltaic systems may seem high, the price of solar technology has been steadily dropping in recent years encouraging medium- and small-scale industries to embrace this clean energy source.
 

 

Some of the other advantages include-   

 

  1. Reduced dependence on the grid power supply safeguards operations from outages and downtime. Solar-powered industries can set up shop in remote regions where the grid supply may need to be better established.

  2. Solar technology reduces cost fluctuations, as grid supply price volatility no longer impacts manufacturing costs. Moreover, solar systems are a one-time investment that provides uninterrupted and free power for approximately 10-20 years.

  3. The Indian government strategically supports investment in solar power. Businesses can leverage attractive tax breaks and accelerated depreciation allowances on solar technology systems, reducing their overall tax burden. Additionally, net metering policies provide an opportunity to generate revenue by selling excess solar energy back to the grid.

  4. Lastly, opting for renewable energy power drives up property valuation, improves attractiveness for investors and creates branding opportunities for companies. 



While solar power offers many advantages for industries, integrating photo-voltaic panels with solar batteries unlocks a whole new level of efficiency and versatility for your setup.

The next section of this blog deep dives into solar systems with batteries. 



How Do Solar Systems with Batteries Work More Efficiently?



Solar batteries act as the cornerstone of a truly optimised solar energy system. By capturing excess electricity generated during high sunlight, they ensure a consistent and dependable power supply, even during extended periods of cloud cover or night hours. The electrochemical processes within the batteries store this surplus energy as potential energy, allowing for its convenient conversion back into usable electricity when needed. 

 


The Types of Solar Batteries


Lead-acid and lithium-ion batteries are the two most popular batteries for solar cells. Each has distinctive merits and applications. 


Lead Acid Batteries 


For industries with solar energy systems prioritising affordability and reliability, lead-acid batteries remain a strong contender. These time-tested batteries come in flooded or sealed varieties, each suited for different discharge patterns (shallow or deep cycle). While newer technologies offer higher energy density, lead-acid batteries' advancements in lifespan make them a viable option for several industrial applications.


Lithium-ion Batteries


Lithium-ion batteries are a recent innovation in solar energy storage. While their high energy density allows for smaller and lighter units, coupled with efficiency for deeper discharge, this advanced technology comes with a significantly higher upfront cost.



Factors to Consider While Selecting a Solar Battery for Solar Panels



Selecting suitable solar batteries is a multi-faceted decision. Here are some criteria that should be considered while planning solar energy systems for industries- 


Battery Lifespan 


Battery lifespan is influenced by maintenance, type, quality, and depth of discharge. Referring to the manufacturer's specifications helps determine a solar battery’s expected life cycle. Additionally, proper maintenance practices can significantly enhance performance and longevity. 


Lead-acid batteries typically last 1-10 years, depending on usage patterns. While lithium-ion batteries boast a longer lifespan, the total cost of ownership must be considered when evaluating options. 

 

With their lower upfront cost, lead-acid batteries may be a more cost-effective solution for specific photo-voltaic applications. 


Depth of Discharge 


Depth of Discharge (DOD) is the amount of stored energy used before your solar batteries’ recharge is needed. Deeper discharges typically lead to a shorter battery life. Most batteries provide a cycle life estimate (number of charge/discharge cycles) based on a specific DOD, along with a recommended maximum depth of discharge. When choosing a solar battery for a solar panel system, consider the battery's intended use. By matching the required DOD to your application, you ensure optimal performance and longevity for your investment.takes up floor space. 


Cost & Capacity


While factoring in costs, one must consider the budget, the solar power system's long-term goals, the battery lifespan, and the replacement and maintenance expenses. 


Selecting appropriate battery capacity is a critical decision when implementing solar technology. A well-sized battery bank directly influences its ability to store excess energy generated by your solar panel. This stored energy ensures a reliable and uninterrupted power supply, even during periods with minimal sunlight. 


Usage & Applications

 

Consider whether your solar batteries need to provide short bursts of energy or sustain your plant for extended durations, your facility's daily sun exposure, and the depth of discharge best suited for your application. 

 

Since no one-size fits all, answering these questions and consulting experts in solar energy systems for industries can help you make the right choices regarding battery type and capacity.   


Energy Efficiency


Energy losses occur during the transfer and storage of collected solar power from panels to solar batteries. The efficiency of this process depends on the amount of energy generated and the system configuration.

 

Investing in high-quality, reliable batteries can mitigate these energy losses to a significant degree.  .


Today, solar power with battery storage is not just about reducing your carbon footprint but also about securing a sustainable and cost-effective energy future for your factory. With low maintenance and reliable power generation, solar technology offers long-term benefits that pay off for your business and the environment. UNIK Batteries is dedicated to helping you reap the rewards of solar energy with our modular stationary and stationary battery solutions.


Contact us and explore how our batteries can help you achieve long-term energy sustainability goals. 

Sulfation: The Silent Killer of Lead‑Acid Batteries & How You Can Prevent It

By Unik Techno • August 1, 2025
Sulfation is a widespread yet often overlooked issue in the world of lead-acid batteries. Frequently dubbed the “ silent killer” , it operates without obvious warning signs, quietly reducing both battery performance and service life. Whether used in industrial machinery, UPS systems, or off-grid energy storage, sulfation poses a serious risk to any application reliant on reliable battery power. What is Sulfation in Lead Acid Batteries? At its core, sulfation refers to the accumulation of lead sulphate crystals on the battery’s internal plates. This occurs naturally during discharge as the active material on the plates reacts with sulphuric acid. In a properly maintained battery, these crystals dissolve again during the charging process. However, when a battery is left undercharged, stored in a discharged state, or routinely subjected to deep discharge cycles, these sulphate crystals begin to harden. Over time, they become dense and irreversible, severely inhibiting the battery’s ability to hold and deliver electrical charge. What Causes Sulfation in Lead Acid Batteries? Understanding the root causes of battery sulfation is the first step to avoiding it. One of the most common contributors is infrequent or incomplete charging. A battery that is not brought back to a full state of charge after use may retain a residue of sulphate on the plates. This residue becomes the starting point for permanent sulfation, especially if the battery is neglected over repeated cycles. It is not just charging habits either—environmental conditions also play a significant role. High ambient temperatures accelerate the electrochemical reactions inside a battery, increasing the likelihood of crystal formation and growth. In warmer climates, or in confined battery enclosures without proper ventilation, this risk is amplified. Prevention of Sulfation in Lead Acid Batteries Prevention begins with proper charging practices. Always use a smart charger that can automatically adjust the charging voltage and current based on the battery’s state-of-charge. These chargers typically include bulk, absorption, and float stages that ensure a complete and balanced charge. Some models even include pulse or maintenance modes that help dissolve early-stage sulphate deposits, reducing the onset of crystallisation. Routine maintenance is another critical factor. For flooded lead-acid batteries, it’s important to regularly check electrolyte levels and top up with demineralised water when necessary. Low electrolyte levels expose the upper portions of the battery plates to air, causing oxidation and increasing the likelihood of sulphate build-up. In addition to fluid checks, make sure to clean terminal posts, check for corrosion, and tighten connections to ensure efficient current flow. Equalisation charging is a powerful tool in the prevention arsenal. This is a controlled overcharge applied periodically—usually once every 30 to 90 days that helps equalise the voltage between cells and reverses mild sulfation. Equalisation charges are particularly effective in larger battery banks where cell imbalance is common. However, they should only be performed according to the manufacturer’s guidelines, as excessive overcharging can damage the battery. Storage practices also matter. If a battery is left unused for extended periods, it must be stored fully charged and kept in a cool, dry environment. Batteries in storage should be recharged every 60 to 90 days to prevent the slow self-discharge that can lead to sulphate crystallisation. Even sealed lead-acid batteries are vulnerable if stored improperly. While some specialised de-sulfation chargers claim to reverse sulfation through high-frequency pulse technology, their effectiveness is generally limited to early-stage sulphate deposits. Once the crystals become hard and dense, recovery is unlikely, and battery capacity is permanently reduced. Prevention remains far more effective than any attempted cure. The consequences of ignoring sulfation can be expensive. Reduced runtime, increased charging times, and eventual failure can disrupt operations and require premature battery replacement. For businesses, this translates to higher operational costs, increased downtime, and reduced energy efficiency. At UNIK Batteries, we believe that prevention is the smartest investment. By manufacturing high-quality lead-acid batteries and state-of-the-art charging components, we help customers protect their power infrastructure from day one. Whether you operate forklifts , golf carts , maintain a solar backup system , or manage a unit of UPS batteries , we have the right solution to keep you powered and protected from sulfation. Contact us to explore our range of batteries and charging components today!
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