Specifications
Battery
- Technology
- EFB
- Voltage
- 12V
- Capacity
- 85Ah
- Cold cranking current (EN)
- 800A
- Length
- 306mm
- Width
- 173mm
- Height
- 225mm
- Terminal layout
- 0 — positive right
- Terminal type
- T1 standard (EN)
- Hold-down
Why this one
01
EFB construction
Reinforced flooded design made for basic start-stop duty.
02
About 2x cycle life
Varta states roughly twice the cycle life of a standard flooded battery.
03
AGM upgrade path
EFB cars can move up to AGM; AGM cars must never get EFB.
04
ETN 585501080
Short code N85, case D31, for a quick match to the fitted battery.
On the job
Where it belongs
EFB is the step between a standard flooded battery and AGM. It suits cars with basic start-stop that do not recover brake energy, and Varta rates it at about twice the cycle life of a conventional battery. This one is in the D31 size used on many Asian cars, 306 x 173 x 225 mm with a B01 ledge.
Fitting it right
You can upgrade an EFB car to AGM if it keeps flattening its battery, but never fit EFB where the car came with AGM. Where the maker requires it, register the battery change with a diagnostic tester so the charging strategy matches. Clean the terminals, check the clamp, and return the old battery for recycling.
