Cars that need an AGM battery
At least 118 models across 29 makes in our database come with an AGM battery from the factory - almost always because they have engine stop-start, which cycles the battery far harder than a standard flooded battery can handle. On these cars, fitting a cheaper flooded battery can cause early failure and stop-start or charging faults, so replace AGM with AGM.
Coverage varies by year and trim - some model years use AGM while older ones do not. Open a model to confirm the exact factory battery type for your year. AGM vs EFB vs flooded →
Dodge
Honda
Lexus
Nissan
Frequently asked
How do I know if my car needs an AGM battery?
If your car has engine stop-start (the engine shuts off at red lights) it almost certainly came with an AGM battery, and you should replace it with AGM. Look up your exact year and model to confirm the factory type.
Can I put a regular flooded battery in a car that came with AGM?
It is not recommended. Stop-start systems cycle the battery far harder than a flooded battery can handle, so a flooded replacement can fail early and may trigger charging or stop-start faults. Replace AGM with AGM.
Can I upgrade a flooded battery to AGM?
Usually yes, as long as you keep the same group size. AGM handles deep cycling and heat better. Some vehicles need the battery type registered to the charging system - check your owner's manual.