|Failure Type||Battery Part||Factor of Failure||Appearance||Cause of Problem Wise|
|Cell Short||Special cell||Short|
|Top cover leak||1) Electrolyte leakage|
|Electrolyte leakage||1) Electrolyte leakage|
|Explosion||Exhaust hole||1) Battery explosion|
Lack of gassing while on charge may indicate an internal short between plates, i.e., the cell discharges internally as fast as it is being charged.
Specific gravity or voltage of a cell lower than other cells is an indication of excessive internal losses and may result from consistent undercharging.
Color or appearance of plates or sediment different from other cells is addressed below:
If any checks below are excessive, capacity tests must be run to determine if individual cells or the entire battery should be replaced.
Buckling of positive plates indicates excessive sulfation caused by undercharging or excessive temperature.
Failure to supply rated ampere-hours indicates discharged condition, excessive sulfation, or loss of active material from positive plates. Cells may be worn out or active material may be gone from positive plates.
Extreme hot temperature can be effect with battery life due to sulfation and corrosion inside the battery. During cold weather you usually notice the problem (trouble with start the vehicle and poor charging).
Irregular use of your vehicle like parked for few weeks can effect up to 1% of the battery´s charge for standby functionality. Depending on the ambient temperature and the life of the battery, self-discharge can weaken the battery within few weeks.
Long drive is need of your battery to recharge, short distance cannot help the battery to recharge frequently. High-consumption accessories such as defrosters and heated seats make matters bad in cold weather.
The older vehicle can affect the battery performance due to corrosion and sulfation. The sulfate crystals that form can clog the pores the plates of your battery, preventing proper charging.