What are the signs of a battery that needs maintenance?

What are the signs of a battery that needs maintenance?

Here are some common signs that a battery needs maintenance:

Performance-related signs
Reduced range : If your electric scooter doesn't go as far as it used to on a full charge, the battery may be failing. For example, if it used to cover 20 miles on a single charge and now only manages 10 miles, this is a clear indication of a problem .
Extended charging times : A battery that takes longer to charge than usual is a warning sign. As the battery ages or gets damaged, its charging efficiency decreases .
Battery doesn't hold a charge : If your scooter loses power quickly after being fully charged, the battery may be weak. It might not be able to store the charge properly, leading to a short riding duration .
Sudden power drops : Experiencing sudden power drops or your scooter randomly turning off during use can be a clear indicator that the battery is struggling to hold a charge .
Inconsistent performance : If your scooter's performance has become inconsistent, with power surges and lags, this can also be a sign that the battery is no longer functioning effectively .

Physical signs
Visible damage : Any physical damage or swelling is a clear sign that the battery needs replacement. Lithium-ion batteries can swell due to gas buildup from overheating. Inspecting for physical integrity is vital for both safety and functionality, as damaged batteries pose risks of leaks or explosions .
Leaking : If you notice any liquid leaking from the battery, it's a serious problem. This could indicate that the internal components of the battery have been damaged and the chemicals inside are escaping .
Corrosion : Corrosion on the battery terminals can affect the electrical connection and is a sign that the battery is not in good condition. It may also indicate that there has been some kind of chemical reaction or leakage within the battery .

Other signs
Voltage drops : Significant voltage drops during use indicate a weak battery. You can use a multimeter to check the voltage. If the voltage is significantly lower than the battery's rated voltage, it may be bad .
Age of the battery : Most batteries last 2-3 years. Older batteries are more likely to fail. If your battery is within this age range and showing any signs of the above issues, it might be time for a replacement .
Frequent error messages : If your scooter's display shows frequent error messages related to the battery, such as low voltage or battery fault warnings, it's a sign that the battery needs attention .