Choosing a battery seems simple until you have to do it: AGM, EFB and gel technologies, capacities, sizes, polarities and prices from €50 to over €300. This guide brings everything together in one place.

Battery types at a glance

  • Conventional lead-acid — cars without start-stop (3-5 years).
  • EFB — basic start-stop (4-6 years).
  • AGM — advanced start-stop, regenerative braking (6-8 years).
  • Gel and deep-cycle — motorhomes, marine, solar, mobility.
  • Lithium (LiFePO4) — premium deep cycle, 2,000+ cycles.

Golden rule: never downgrade technology. If your car came with AGM, replace with AGM.

How to find the right battery

Four facts define the correct replacement: dimensions, capacity (Ah, ±10-15% of original), cold-cranking amps (never below original) and polarity. Or skip the homework: our battery finder returns only compatible batteries from your number plate.

How long batteries last

Average life is 4-5 years. Sustained heat, short trips, deep discharges and long parking periods are what shorten it. Sluggish morning starts, dimming lights at idle or infotainment reboots announce failure weeks ahead — below 12.4 V at rest, start planning.

Special uses

For motorhomes, boats, solar installations and mobility vehicles the logic changes: usable capacity and cycles matter more than cranking power. Many of these references are supplied on demand — each product page has a quote form and our technical team replies within 4 working hours.

Ready to choose? Find your battery by number plate at baterias.com — 24h shipping and free 14-day returns.