How to choose a battery (capacity, starting current)?

Choosing a battery is often reduced to one number — capacity. In reality you have to match several parameters at once, otherwise the battery will work badly or won’t even fit in the car.

The key parameters

• Capacity (Ah) — the energy reserve, matched to the car’s equipment
• Starting current (A) — the ability to start, especially important in frost
• Dimensions and case type — must fit the mounting spot
• Polarity — the layout of positive and negative (left/right)
• Type: flooded, EFB or AGM — depending on the car

Capacity and starting current

Capacity in amp-hours defines the energy reserve — the more loads, the more you need. The starting current says how hard the battery can “kick” when starting; too low means starting problems in winter.

Dimensions, polarity and type

Even ideal electrical parameters won’t help if the battery doesn’t fit the tray or the terminals end up on the wrong side. In start-stop cars the right AGM or EFB type is mandatory.

Too weak a battery won’t start the car in frost, and too big won’t fit — the choice is matching several parameters at once.

Don’t guess — we’ll choose for you

You don’t have to study catalogues. Give us the make, model and year of the car, and we’ll select the right battery and replace it with call-out, registering it in the car where required.