Online UPS systems play a vital role in safeguarding sensitive equipment such as servers, medical instruments, telecom systems, and industrial machinery. At the core of every Online UPS are SMF (Sealed Maintenance Free) batteries, which ensure uninterrupted power supply during outages.

For businesses looking for a reliable online UPS batteries replacement service in Chennai, Powertech Controls trusted partner for Online UPS and SMF Batteries, Tubular Batteries offers professional, safe, and long-lasting battery solutions.

Understanding SMF Batteries in Online UPS Systems

Online UPS systems are mostly connected to SMF batteries, which, as the name suggests, are maintenance free. These batteries are sealed and designed to work efficiently under continuous float charging conditions.

On average, SMF batteries last 3 to 4 years, while some high-quality models may last up to 5 years, depending on:

• Battery manufacturer
• Operating temperature
• Load pattern
• Charging efficiency of the UPS

After their lifecycle, battery performance starts degrading internally.

Why Timely Online UPS Battery Replacement Is Important

Once SMF batteries age, they start showing warning signs such as:

• Bulging of battery casing
• Excessive heating
• Reduced backup time
• Terminal corrosion

Bulging and overheating are serious safety concerns. If not replaced immediately, such batteries may leak, fail suddenly, or even blast, causing damage to equipment and posing safety hazards.

This is why Powertech Controls strongly recommends timely replacement and inspection of online UPS batteries.

Should You Replace a Single Battery or the Entire Battery Bank?

Online UPS batteries are connected in series to achieve the required voltage. A common mistake is replacing only one faulty battery.

Why Replacing All Batteries Is Recommended

• All batteries age at the same rate
• Mixing old and new batteries causes imbalance
• New batteries degrade faster
• Backup time and UPS efficiency drop

👉 Best practice is to replace all batteries connected in series together, ensuring consistent performance and longer battery life.

Best SMF Battery Brands for Online UPS

Powertech Controls, trusted partner for Online UPS and SMF Batteries, Tubular Batteries, supplies and installs only proven, high-quality battery brands such as:

Exide

• Industry-trusted brand
• Excellent backup reliability
• Ideal for data centers and industrial UPS systems

Amaron – Quanta Series

• Long service life
• High discharge efficiency
• Stable performance under heavy loads

What Is Included in Online UPS Battery Replacement Service?

When batteries are replaced, Powertech Controls follows a complete safety and quality checklist:

• Inspection of battery terminals and lugs
• Checking interlinking cables for wear or damage
• Replacement of damaged cables if required
• Proper tightening and insulation checks
• Battery voltage testing and UPS performance verification

This ensures safe operation and long-term reliability.

Importance of UPS and Battery Maintenance

Even though SMF batteries are maintenance free, regular monitoring and preventive maintenance are essential.

Battery Monitoring Includes

• Checking for heating and bulging
• Inspecting terminal corrosion
• Ensuring cable insulation integrity

Online UPS Maintenance

Online UPS systems must be air blown at regular intervals. Dust accumulation inside the UPS increases internal temperature and can lead to:

• Corrosion of copper tracks on PCB
• Damage to electronic components
• Serious, undetectable internal faults

Routine cleaning significantly improves UPS lifespan.

Why Choose Powertech Controls in Chennai?

• Trusted partner for Online UPS, SMF Batteries & Tubular Batteries
• Expert technicians with hands-on UPS experience
• Genuine branded batteries
• Safe replacement and disposal practices
• Reliable after-sales support

Frequently Asked Questions (FAQ)

1. How long do online UPS batteries last?

Usually 3–4 years, depending on usage and environmental conditions.

2. Is it safe to use bulging SMF batteries?

No. Bulging batteries are dangerous and must be replaced immediately.

3. Can I replace only one UPS battery?

It is highly recommended to replace all batteries connected in series.

4. Which SMF battery brand is best for online UPS?

Exide and Amaron Quanta are among the most reliable brands.

5. Does Powertech Controls provide maintenance services?

Yes. Powertech Controls offers complete UPS battery replacement and preventive maintenance services in Chennai.