EFB
A strengthened version of the conventional flooded battery with improved cycling durability. EFB is commonly specified for entry-level start-stop systems that do not need the full capability of AGM.
Replacement rule: EFB can often replace a conventional battery, and AGM can often replace EFB — but EFB should not replace AGM. The vehicle may also need to be told which type is fitted.
Read the EFB guide →