Lead-Acid Batteries For Automobiles

What is an automotive lead-acid battery?

Automotive lead-acid batteries belong to the "starting, lighting, ignition" (SLI) family of lead-acid batteries, and are mainly used for:

Engine starting (high instantaneous current)
Power supply for on-board electronic equipment (such as headlights, radio, central control)
System voltage stability and backup power supply

Car Series - Start - Stop

Car batteries power the starter and ignition systems to start the engine. They also provide the extra power needed when the vehicle's electrical load exceeds what the charging system can supply. Car batteries act as voltage stabilizers in the electrical system. The battery balances voltage spikes, preventing them from damaging other components in the electrical system.

What should you pay attention to when purchasing automotive lead-acid batteries

Battery model matching (most important)

Check the vehicle manual or the original battery model to ensure that the new battery is consistent with the original battery in terms of size, terminal position, voltage, capacity, etc.

Pay attention to details such as terminal direction (left positive and right negative/right positive and left negative), fixing method, pole diameter, etc. to avoid installation failure or wiring errors.

Appropriate voltage and capacity

(Parameter recommendation)

Voltage: usually 12V (standard car battery)

Capacity (Ah): Choose the same or slightly larger than the original car battery, such as 45Ah, 60Ah

Cold cranking current (CCA) should be sufficient
CCA (Cold Cranking Amps) refers to the maximum current released by the battery at low temperature (-18℃), which determines whether you can start the car smoothly in winter.

It is recommended to choose a battery that is not lower than the original car CCA, especially in the north or cold areas.