Originally Posted by
Tim010
... I’m trying to establish if this battery is AGM or a “regular” one... I just want to know what type as I got a CTEK battery maintainer that has the AGM charging option on it....
It does not matter. Use the Cold Weather setting for Optima and Odyssey AGMs. Use the Normal setting for all other batteries including AGM. Most all the batteries for the Z3 are AGM. I have used my CTEK on Normal for four winters on my Z3's Bosch AGM H6. From the CTEK manual:
Normal battery program
14.4V/4.3A. Use for WET batteries, Ca/Ca, MF, GEL batteries
and many AGM batteries.
41ºF–122ºF
(+5°C–+50°C)
14–160Ah
Cold weather program
14.7V/4.3A . Use for charging at low temperatures and for
power AGM batteries like Optima and Odyssey.
Last edited by Vintage42; 06-01-2020 at 12:36 PM.
BMW MOA 696, BMW CCA 1405
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