How to Recognize the Signs of a Failing Inverter Battery
An inverter battery is an essential part that ensures smooth functioning of any power backup. But even the best-maintained batteries will, after periods of time, develop signs of faltering. This course will ensure that by recognizing these signs-which may occur well in advance-one doesn’t have to suffer sudden loss of power and expensive repairs.
1. Reduced Backup Time
Most apparent evidence of inverter battery failure is that of reduced backup time. When your battery has been running for hours but suddenly it keeps dying within a very short period, this means the storage capacity has gone bad. It may be because of aging issues or poor servicing.
2. Slow Charging
If your inverter battery takes much longer to charge than it did previously, that could be a sign of something wrong. As it gets older, the capacity of the battery to hold the charge decreases, which means longer charge duration and low efficiency of power storage .
3. Overheating
Excessive heating while on charge or at work is yet another warning signal. While the inverter batteries do tend to generate some amount of heat while at work, persistent overheating shows that there may be internal damage or overcharging. Overheating can further reduce the electrolyte levels of the battery, hence accelerating its wear and tear.
4. Unusual Noises
The strange noises, such as hissing or bubbling sounds, coming from the battery are very serious. These usually come from electrolyte imbalances, internal corrosion, and even dangerous chemical reactions within the battery.
5. Swollen Battery Case
A swollen or bloated battery casing is indicative of internal pressure due to gas generation. This generally emanates from overcharge or internal short-circuiting, either of which reduces its useful life considerably or even creates a safety hazard.
6. Terminal Corrosion
Frequent corrosion around the battery terminals is also indicative of failure. Corrosion impacts not only the electrical connectivity but it is also indicative of electrolyte leakage that can damage the battery with time.
7. Foul Smell
A sulfur rotten egg smell from the inverter battery indicates a sulfur leak, usually representing a critical problem that has often been caused by an overheating or overcharged battery. This can further develop into other hazardous conditions such as leakage of acid.
8. Inconsistent Power Supply
If you feel that there is constant power fluctuation, for example, lights start flickering when the inverter is on, then this could be due to a faulty battery that is incapable of delivering stable power. This instability is generally caused either by aged cells or due to an internal fault.
Ways to Avoid Battery Failure
- Regular Maintenance: Most importantly, regularly check fluid levels and clean terminals periodically.
- Avoid Overcharging: The inverter should be equipped with a good-quality charge controller.
Replace Old Batteries: Most of the batteries last for 3-5 years. If yours is older, then this may be a replacement time. 
How to spot the signs of a Failing Inverter-Battery?
By being watchful about all these cautionary signals, you can increase the life span of your inverter battery and avoid sudden loss of power. In such a scenario, if your battery develops any of these symptoms, then professional consultation for a detailed checkup or replacement will be quite handy.