Start with the original
The factory battery type is the minimum. Stop-start vehicles in particular need EFB or AGM.
Technology
Three lead-acid technologies, each designed for a different kind of vehicle and driving.
Aurion's top starting battery. The acid is soaked into fine glass-fibre mats packed between the plates, so an AGM gives very high cranking power, recovers from deep drains and copes with vibration. It's built for modern stop-start cars with lots of electronics.
Explore →EFBA flooded battery made tougher. Thicker grids and a polyester scrim hold the active material on the plates, so an EFB lasts through far more charge cycles than a standard battery. It's the value choice for entry-level stop-start cars.
Explore →CalciumThe dependable workhorse. A fully maintenance-free sealed design whose calcium-alloy plates greatly reduce water loss and self-discharge, giving strong, reliable cranking with no upkeep. Ideal for vehicles without stop-start.
Explore →| AGM | EFB | Calcium | |
|---|---|---|---|
| Cycle durability | |||
| Cranking power | |||
| Charge acceptance | |||
| Vibration resistance | |||
| Stop-start ready | |||
| Deep-drain recovery | |||
| Value |
More bars means stronger in that category. This is a relative comparison of starting-battery technologies.
Tough polypropylene box holding everything.
Six cells in series, ~2.1 V each = 12.6 V.
Lead dioxide (PbO₂) on a lead-alloy grid.
Sponge lead (Pb), interleaved with the positives.
Porous sheets that stop plates touching.
Positive (+) and negative (−) posts.
Seals the cells; vents let gas escape safely.
How it works
Follow the step-by-step walkthrough of what happens inside a lead-acid battery.
See how it worksChoosing well
Start with what your vehicle came with, then think about how and where you drive it.
The factory battery type is the minimum. Stop-start vehicles in particular need EFB or AGM.
Accessories, short trips and heat all affect a battery. Your workshop can help match the technology to your use.
Not sure? Use the Battery Finder or ask an Aurion distributor for the right fit.