Frequently Asked Questions

A device that stores the electrical energy as chemical energy and supplies this energy as electrical energy when needed is called battery. Below are listed the battery types and fields of application.

  • Lead-acid Battery: Automobiles, trucks, tractors, etc.
  • AGM: Stationary Facilities, UPS, boats, power plants.
  • Gel Battery: Maritime sector, solar energy systems, etc.
  • It provides the required amount of electrical energy to operate the starter engine and start up the vehicle.
  • Furthermore, it meets electric power demand of the ignition sytem to start up the vehicle.
  • In the cases when the alternator does not meet the demand in an automobile, it also supplies power to the other components of the system such as starting ignition, head lamps, heaters, air condition and radio that require energy to operate.
  • Besides, it protects the computer memories, head lamps and radio against the electrical fluctuations by forming the whole voltage control system of the vehicle.

The battery selected may have a higher or lower capacity than the required.
A) If the battery is not adequate for the vehicle’s power consumption,

  1. In the event that the consumers draw excessive current, long-term high current supply may lead to high charging in the battery since this will cause the battery to be discharged quickly.
  2. Excessive amount of consumption will cause the starter to failing to start especially in cold weather.

B) If the battery’s capacity is higher than needed for the vehicle,

  1. This is depending on the alternator. The alternator would not be able to charge as required.
  2. If the cable section is too thin in the electrical cable system of the vehicle, the cable heats up and it may even cause fire in the case of the alternator feeds the high currents for a long time.

Battery Mounting Steps;

  • Turn off the engine of the car.
  • Check the vehicle voltage and direction (reverse-straight battery) using a voltmeter kit. (Do not connect reversely since it may harm the electronic system of the vehicle)
  • Firstly remove the negative (-) terminal, and then, remove the positive (+) terminal of the battery to be replaced.
  • Clean the vehicle’s battery tray and cable terminals and place the new battery.
  • Then, carefully tight the the lower connections. When connecting the new battery; firstly the positive (+) and then, the negative (-)terminals must be connected and carefully tightened. During connection, it has to be paid attention not to leave any space between the terminal and connection element. Furthermore, attention has to be paid not to damage the battery terminals during tightening.

Note: : It has to be taken into consideration that removal of the battery from the computer aided vehicles may cause loss of memory in electronic devices used in such vehicles. Therefore, power cut should be prevented by means of a second battery or a special device before removing the battery.

  • Contrary to the general belief, high temperature damages a battery more than the extreme cold does. The best way to protect your battery against extraordinary weather conditions is keeping your battery fully charged.
  • Besides, periodically checking the battery terminals (positive / negative terminals) for oxidation and loosening, and keeping your vehicle in an enclosed garage in cold weather especially during the nights will help the battery to function at maximum performance for a long time.
  • The most common failures with the batteries are those which are caused by vibration. The batteries should be mounted so as not to allow shocks, and it should be paid special attention to the tightness of its connections. The special alloy and the plate design developed by Yigit Aku provides much better performance in the extreme hot and cold weather conditions and road conditions in our country.
  • Any reuse attempt of a used battery by heating and / or applying other methods to revive or reinforce the battery may cause leakage, explosion or burning. It is absolutely not recommended at all since it may either damage your vehicles, or more importantly, harm you.

Note:If the battery connection cables are left loose, they may arc and this may cause the battery to explode. On the other hand, if the connection cables are tightened too much, it may cause the lead terminal to break off or acid leakage may occur due to opening at the bottom plastic of any battery terminal.


When mounting a new battery or in the case of a defective battery, check the battery-related electrical equipment of the vehicle.
The most common mistake that may be made in a vehicle is overcharging or undercharging. Check whether the output voltage of the alternator with a standart battery and at full throttle is in the range of 13.8 – 14.4 volts for proper operation of the electric systems for the Ca-Ca batteries.


Attach a clamp meter to the cable that comes out from the (-) terminal of the battery. The value of the currency flowing through the cable is the constant consumption (leak current) value of the vehicle.

Another method is to connect a digital voltmeter between the ground cable and the battery. Then, all electric consumers are turned off. If there is no leakage, the device will not show any value. In the case of leakage, the device may show a value like 1-2 V.


Check and note the Volt value showed by the device’s needle when the vehicle is started.
Turn off the engine.
Load the battery by means of the voltmeter (that is, turn the starter button for 5 to 10 seconds). Check and note the Volt value showed by the device’s needle.
Compare it with the previous voltage value. The starter motor is normal if there is no significant difference between two voltage values. Otherwise, it means that the starter motor is defective and it must be replaced immediately !!!

  • It is recommended to have Maintained Type (MF) batteries to be taken into maintenance service once in minimum 3 or maximum 6 months in the authorized service locations. During maintenance, the electrolyte level of the battery is checked according to the decrease in the level.
  • If the one will carry out maintenance by herself/himself, only “distilled water” should be added to the battery. Any kind of liquids (including the city water) other than distilled water may cause the battery to be discharged or overcharged.
  • If the vehicle has difficulty in starting or it starts late, it needs to attention that there may be issues which directly affect the battery’s service life. Ignition system, charging system, fuel system, alternator, charging generator and starter motor should be checked for failure; an the cables should be checked for formation of resistance.
  • Maintenance of the battery and preparation of the battery for the season change before the winter comes will prolong the battery life.
  • The only thing to do with the maintenance-free (SMF) batteries is to clean the battery terminals with hot water using a brush that will not damage the terminals.
  • Our batteries are starter lead-acid batteries and are produced in compliance with the TS 50342-1 Standard.
  • Warranty period of our batteries starts on the delivery date of the product, and it is 2 years. For the commercial passenger transportation vehicles (Bus, Minibus, Taxi, etc.), the warranty period is 1 year.
  • Please consult to an authorized Yigit Aku service point in case that your battery is malfunctioned without responding the failure in anywhere other than an authorized service or draining the electrolyte.
  • From the Warranty Certificate, you can reach the details of all authorized service points in Turkey, or 444 1 457 Battery line can transfer your call.
  • Any battery that have a manufacturer’s defect is under the assurance of Yigit Aku A.S. and it will be replaced free of charge. However, the warranty period of a replacement battery is limited to the warranty period of the initially purchased battery.
  • The occurence of stiffening in the battery which is caused by malfunctions at the starter motor or charging generator of the vehicle,
  • The occurence of combustion (overcharging) in the battery which is caused by malfunctions at the starter motor or charging generator of the vehicle,
  • The hardening caused due to continuous operation of the vehicle for a long time,
  • Explosions resulting from loose fastening of the battery connection cables,
  • Short circuiting the battery, explosion of the battery due to any spark caused by any kind of metal subtance between the positive and negative terminals,
  • Explosion of the battery caused by covering the gas outlets on the plugs with any kind of material or blockage of these units due to contamination,
  • Damages caused by reverse connection of the battery,
  • Deterioriations caused by putting incorrect acid while preparing the dry charged battery for first use, and by adding acid to wet charged battery,
  • After the battery is mounted to the vehicle

A- Terminal fractures

B- Case and cover fractures and cracks

C- In the event that no Convertor (Voltage Dropper) is used in double-battery (24-Volt) vehicles,

D- For the double-battery vehicles with Serial terminal (24 V) or Parallel terminal (12 V) arrangement; the battery failures which occur because of a destabilizing reasons when charging or discharging the battery with separate output for any Battery (Radio, Tape Player, etc.) WILL NOT INCLUDED IN THE SCOPE OF WARRANTY.

  • It is just the water (H20) that decreases from the battery due to evoporation. Acid (H2SO4) will not decrease. The reason for this may be a malfunction in any electrical equipment of the vehicle. Therefore, the amount of water that has to be put into the battery is just the amount that had decreased and the level of this amount must be 1 cm above the seperators. The water level of the battery must be controlled, in case that the amount of water with acid decreases below the sufficient level, the only type of water that MUST BE ADDED IS THE DISTILLED WATER. Please have this operation done in an authorized Yigit Aku service.
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