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

If the battery becomes discharged in a short time (because, for example, the headlights or interior lights were left on whilst the vehicle was not in use), recharge it by slow charging (trickle) for 10 hours.
If the battery gradually discharges because of high electric load whilst the vehicle is being used, recharge it at 20~30 A for two hours.

Warning

When recharging the battery, observe the following precautions:

The battery must be removed from the vehicle and placed in an area with good ventilation.
Do not allow cigarettes, sparks, or flame near the battery.
Watch the battery during charging, and stop or reduce the charging rate in following cases:
1. the battery cells begin gassing (boiling) violently
2. the electrolyte temperature of any cell exceeds 49 °C.
Wear eye protection when checking the battery during charging.
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.
Before performing maintenance or recharging the battery, turn off all accessories and stop the vehicle.
The negative battery cable must be removed first and installed last when the battery is disconnected.