Possible reasons include:

i. Faulty charger or UPS charging circuit
ii. Loose or corroded connections
iii. Aging or damaged battery cells
iv. Incorrect charging voltage

i. Voltage Test: Use a multimeter to measure battery voltage
ii. Load Test: Apply a load and measure the voltage drop
iii. Capacity Test: Use specialized equipment to assess remaining capacity

i. Overcharging or undercharging
ii. Exposure to high temperatures
iii. Deep discharges without proper recharging
iv. Lack of regular maintenance

i. Store in a temperature-controlled environment (10°C to 25°C)
ii. Charge the battery to full capacity before storage
iii. Periodically recharge to prevent sulfation.

It’s recommended to replace all batteries in a bank simultaneously to avoid
imbalance and ensure uniform performance.

Dispose of them at authorized recycling centres or battery collection programs. Never dispose of batteries in regular trash due to their hazardous
materials.

Replace batteries if you notice:

i. Significant voltage drops during load tests
ii. Reduced backup time or runtime
iii. Physical damage such as swelling, leaks, or corrosion

While rare, batteries can explode due to:

i. Overcharging
ii. Excessive heat or fire exposure
iii. Internal short circuits
iv. Always follow proper handling and maintenance practices

• Use compatible chargers with proper voltage settings.
• Avoid exposing batteries to extreme temperatures.
• Perform regular maintenance checks.
• Avoid overloading the UPS system.

Purchase replacement parts through authorized dealers or directly from the manufacturer. Always confirm compatibility with your AVR model.