Hyundai Tucson Owners & Service Manuals

Hyundai Tucson: Battery / Battery Recharging

By battery charger

Your vehicle has a maintenance-free, calcium-based battery.

  • If the battery becomes discharged over a short time (because, for example, the headlights or interior lights are left on while the vehicle is not used), recharge it by slow charging (trickle) for 10 hours.
  • If the battery gradually discharges because of high electrical load while the vehicle is being used, recharge at 20-30 A for two hours.


To prevent the risk of serious injury or death from explosions or acid burns:

  • Before performing maintenance or recharging the battery, turn off all accessories and stop the engine.
  • Keep all flames, sparks, or smoking materials away from the battery.
  • Always work outdoors or in an area with plenty of ventilation.
  • Wear eye protection when checking the battery during charging. Do not contact the battery. This may result in serious injury.
  • Remove the battery from the vehicle and place it in a well ventilated area.
  • Watch the battery during charging, and stop or reduce the charging rate if the battery cells begin boiling violently.
  • Remove the negative battery cable first and install it last when the battery is disconnected. Disconnect the battery charger in the following order:
    1. Turn off the battery charger main switch.
    2. Unhook the negative clamp from the negative battery terminal.
    3. Unhook the positive clamp from the positive battery terminal.


AGM battery (if equipped)

Absorbent Glass Matt (AGM) batteries are maintenance-free and should be serviced by an authorized HYUNDAI dealer. Only charge using fully automatic battery chargers that are specifically for AGM batteries.


Do not open or remove the cap on top of the battery. This may cause leaks of internal electrolyte that could result in severe injury.

By jump starting

After a jump start from a good battery, drive the vehicle for 20-30 minutes before it is shut off. The vehicle may not restart if you shut it off before the battery had a chance to adequately recharge. Refer to the “Jump Starting” section in Chapter 8 for more information on jump starting procedures.


An inappropriately disposed battery may be harmful to the environment and human health. Dispose of the battery according to your local law(s) or regulations.

    Battery Capacity Label
    1. MF68L-DIN: The HYUNDAI model name of battery 2. 12V: The nominal voltage 3. 68Ah (20HR): The nominal capacity (in Ampere hours) 4. RC 110min: The nominal capacity (in Ampere hours) 5. 6 ...

    Reset Items
    The following items may need to be reset after the battery has been discharged or disconnected: Auto up/down window (refer to Chapter 5) Sunroof (refer to Chapter 5) Trip computer (refe ...

    Other information:

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