The capacity is the ability of the battery to supply current to an external circuit.

CCA is the discharge load in amperes which a new fully charged battery at -18°C can continuously deliver for 10 seconds and maintain a terminal voltage equal to or higher than 7.5V (EN).

Reserve capacity rating is expressed as the number of minutes which a new fully charged battery at 25°C, can be continuously discharged at 25 amperes and maintain a terminal voltage equal to or higher than 10.5V (EN).

The battery life is the length of acceptable performance received from a battery, measured in years.

A maintenance-free battery is a flooded battery that does not require addition of water.

Extreme heat causes the evaporation of water faster than under normal condition. This heat also causes the damage of the positive grids.

The cold greatly reduces the amount of power. At -18°C, the battery delivers only about 40% of the power it would at 20°C.

During exploitation should be checked the electrolyte level at least once a year for TORNADO, CYCLON CALCIU , once in 9 months for PILOT, once in 3 months for TERRA, once in 3 months for MAGMA. Electrolyte level should be 26 ± 2 mm over the plates for all types of batteries. A lower electrolyte level could be adjusted only by adding distilled water, never sulphuric acid or top water.

The state of charge indicator on the top of the battery shows battery state of charge and electrolyte level, as following:
-Green: good level, charged battery
-Black: good level, discharged battery
-White: low level, requires distilled water

Look in the car manual, which battery matches the vehicle model, or look in the retailer's battery application guide.

If the battery performs well on a load test, then something else is wrong. You should check if:
- the battery matches the vehicle's model
- you have made modifications at the vehicle, like air conditioning, radios and so on, which need extra power

The EFB (Enhanced Flooded Battery) is a conventional lead-acid battery that can be manufactured using the existing equipment for the conventional batteries, but having an extending life-span, in order to perform properly during the Start-Stop systems functioning.   

The AGM (Absorbed Glass Mat) battery is a VRLA (Valve Regulated Lead Acid) battery with the electrolyte imobilised within a fine glass-fiber separator, ensuring a uniform contact between the active mass and electrolyte, and also better capacities of charging-discharging, compared to a conventional battery.