A UPS (Uninterruptible Power Supply) backup battery doesn’t do much good if the backup battery needs backup, too.

Above all else, a UPS system must be reliable. People buy UPS batteries to weather glitches in the power grid—temporary blackouts, brownouts, and more—and to safeguard their equipment against fluctuations in power flow.

A healthy UPS system will perform the job splendidly. A weakened one won’t.

Massive UPS systems protect server farms against electrical spikes, surges, and interruptions. Smaller systems can protect your personal electronics, computers, and their peripherals. How much have you invested in your home entertainment or gaming system?

That said, a battery’s performance degrades over time — not just your phone’s battery but all batteries. A UPS battery will last 3–5 years before you have to replace it. Still, some batteries may give you 7 years of reliable service, but that depends on how you treat them.

Below are the top reasons your UPS batteries may have trouble holding a charge.

1. Poor Storage

  • All batteries continually discharge energy, even when not in use. Periodically charge your stored UPS batteries, typically every 3–4 months.
  • Batteries should be stored in a cool, dry space, ideally at 50 degrees Fahrenheit or less.
  • Regularly check the batteries for leaks or corrosion and replace them if necessary.
  • Be aware of the manufacturing date and shelf life of your batteries. Even in storage, batteries age and may not perform optimally if kept for too long.

2. High Room Temperature

  • Maintain the room temperature at or below 77 degrees Fahrenheit.
  • Never expose your UPS system to direct sunlight or heat sources.
  • Minimize large temperature swings, which can shorten battery life.
  • Place your UPS system in a well-ventilated area to prevent overheating.
  • Monitor the room temperature and adjust as needed.

3. Over-Cycling

UPS batteries are designed to recharge after each use during power outages.

  • The more often the battery cycles, the more its capacity diminishes.
  • Record the number of power outages during the battery’s life. This helps you predict when the battery might fail.
  • Minimizing unnecessary power cycles to reduce the strain on your UPS battery.
  • Monitor battery performance and plan for timely replacement.

4. Incorrect Voltage

Maintaining the correct charging voltage for your UPS battery is essential to prevent damage and ensure longevity.

  • Each battery works with a specific charging voltage. Using an incorrect voltage can cause rapid damage.
  • Know the voltage in your home. If unsure, purchase an inexpensive voltage-measuring tool from a local hardware store.
  • The measured home voltage should match the voltage specified by the UPS battery. If there’s a discrepancy, consult a local battery provider or an electrician.
  • Regularly check the charging voltage to ensure it remains within the specified range.

5. Using the Wrong Battery

UPS systems use a specific type of battery that can provide high-energy bursts of 10–15 minutes. Other batteries may seem to work initially, but they will fail quickly and may not deliver the necessary power.

  • Using the wrong battery can lead to reduced performance and potential damage to the UPS system.
  • Always follow the manufacturer’s recommendations for battery types to ensure compatibility and safety.
  • Periodically check the condition of your UPS battery and replace it with the correct type as recommended by the manufacturer to maintain reliability.
  • If unsure about the correct battery type, consult a provider like Powertron to avoid compatibility issues.

6. Poor Battery Maintenance

  • Conduct regular inspections to check for signs of wear, corrosion, or damage that could impact battery performance.
  • Keep battery terminals clean and corrosion-free from corrosion. Dirty connections can affect power transfer.
  • Periodically test the battery under load conditions to confirm it meets performance expectations.
  • Perform battery calibration according to the manufacturer’s guidelines to keep the battery monitoring system accurate.

Not Sure Which Battery to Use? Turn to Powertron

Powertron has been in the battery business for over half a century, first as a manufacturer and now as a low-cost distributor of top-quality batteries.

Our store in Santa Ana, CA, serves Orange County, and we ship batteries anywhere in the USA. Please stop by our store or call us to find the right battery for your UPS system, jet ski, car, home alarm, or anything else bigger than a flashlight.

FAQs: Controlling UPS Battery Drain

Q: How can I tell if my UPS battery is too old?

Check the manufacturing date. It may be time for a replacement if it’s more than 3–5 years.

Q: What should I do with an old UPS battery?

Recycle your old UPS battery at a designated facility or take it to a battery retailer like Powertron that offers recycling services.

Q: Can cold temperatures affect my UPS battery?

Extreme temperatures, both hot and cold, can impact UPS battery performance. It’s critical to store and operate your UPS system within recommended temperature ranges.

Q: How often should I test my UPS battery?

You should test your UPS battery at least twice a year. Regular testing ensures the battery can deliver power in an emergency.

Q: What are the signs that my UPS battery is failing?

Reduced charge times, frequent need for recharges, and physical signs such as swelling or leaks are signs of a failing UPS battery.

Q: Can I use a UPS battery for other applications?

No. Using the battery outside its intended purpose can reduce performance and lifespan and may void the warranty.

Q: How do power surges affect UPS batteries?

Power surges can damage UPS batteries by causing them to overheat or short-circuit. Use surge protection to minimize potential damage.

Q: Is it safe to install a UPS system by myself?

Most medium-sized UPS systems are easy to install. However, for more complex installations, you should consult the manufacturer’s guidelines or seek professional help.