Frequently Asked Questions

The three main functions of the automotive battery are to:

1.     Supply power to the starter and the ignition system so that the engine can be cranked and started.

2.     Supplement the charger system when load requirements exceed the supply capability of the alternator.

3.     Act as a voltage stabilizer in the electrical system. The battery smoothies out or reduces temporarily the high voltages which may occur in the system, thereby protecting voltage sensitive components

The reason of Insufficient Charging:

  • Fan belt loose.
  • If any of the Stator winding fails.
  • If a Diode burns and opens the circuit.
  • If a Diode fails and allows AC to pass, then it causes unpredictable behaviors of various sensors and processors. AC ripple is harmful for battery.
  • Worn out Slip rings or spring-loaded brushes of the Rotor.

  • Failure happens when the charge controller fails.

  • Battery gets overcharged and failure of various electrical components in the car.

When too much voltage occurs, you should do the things below:

  • Fill each cell up to upper level which battery grade sulfuric acid of Sp Gr.1.260+0.01@25C.

  • For better activation cranking, allow the battery to stand 20 minutes after filling.

  • Keep the battery surface clean and dry.

  • Protects terminals with petroleum jelly to prevent corrosion.

  • Check electrotype level periodically and acid only distilled water to restore the upper level.

  • Ensure that cable clamps are fixed tightly.

  • Before filling the battery, check the electrical system of the vehicle.

  • Check the charging system periodically and be sure that the battery gets proper charging.

When too much voltage occurs, you should not do the things below:

  • Do not remove the sealing tape on the vent plug until the battery is ready for filling acid.

  • Do not overfill acid above the upper level.

  • When you try to fix the cable clamps to the terminal posts, prevent strong hitting on the posts.

  • Never add acid to restore the upper level.

  • Keep away explosive materials /gases from the battery.

You can increase the batteries lifetime by:

  •       Select the appropriate battery for specific applications
  •       The battery that meets the OE requirement and external standards will last longer than an under-rated unit.
  •        Battery replacement charts for all vehicle types and models are available and should be followed. 

Physical fitment of the car's Battery:

  •       Footprint area of the battery and the car battery space should match.
  •       Battery should be tightly fixed using the hold down clam.

Keep the engine and alternator well maintained:

  •       A poorly maintained engine generally induces greater under hood temperatures and higher vibration.
  •       A charging system that provides 14 – 14.8 V (Average 14.4 volts) at all conditions will recharge the battery without damaging its internal components.
  •       The Alternator belt should be tight and the carbon bush should not be in worn out condition.

Battery care during idle time:

  •       For prolong non-use of battery it is advisable to remove the negative terminal cable of the battery.
  •       Key off load should not be more than 35 mille Amps. It shows external loads other than the parasitic loads like clock, computer and alarms.
  •       Battery terminals to be checked and tightened and the battery top should be maintained clean and dry. (Leakage voltage Neg Terminal-Battery Top < 0.5 volts).

Causes batteries to fail:


·        Faulty regulator settings resulting in severe overcharging causes the positive plates to disintegrate and the battery to lose power.


·        Faulty regulator settings or a loose fan belt resulting in undercharging causes plates to sulphate and reduces performance. If left unattended for prolonged periods, the sulphation becomes irreversible and the battery permanently short of capacity.

Dirty and corroded terminals:

·        Faulty connections produce high resistance and consequent voltage drops resulting in poor starting and charging efficiencies.


·        Batteries that are not held securely will suffer excessive vibration which can dislodge active material from the grid or break the inter-cell weld.

Over tightening of clamps:

·        Excessive tightening of hold-down clamps can cause the battery container to crack resulting leakage of electrolyte. Not only is the battery ruined, but other components are damaged due to corrosion from the acid.

Incorrect Fitment of terminals:

·        Using force when fitting connections to the battery (e.g. hammering on of terminals to the battery positive and negative poles) can damage the internal connections or damage the poles. Always loosen connections properly with the correct size spanners before connecting or disconnecting the terminals. 

We can treat the battery well by:

  • A battery should be kept clean.

  • A battery should be kept correctly charged.

  • A battery should have the electrolyte kept at the correct level.

  • A battery should not be exposed to excessive shocks or vibrations.