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Old 02-06-2013, 02:29 PM
rebel.ranter rebel.ranter is offline
Officially Welcomed to the 'Fest
Location: Cork, Ireland
 
Join Date: Jul 2007
Posts: 454
Mein Auto: 630i, 525i, 320iC
Can you take a photograph of your original battery that is underneath the turnk mat? Try to capture the 11 digit part number on it. If it is black the battery is AGM, white is a "regular" battery.
Using the battery part number you will be able to determine the specification of the original battery.

Here is the list of batteries fitted to the 650:

http://bmw fans. info/parts/catalog/E63/Coupe/USA/650i-N62N/browse/vehicle_electrical_system/original_bmw_battery_filled/

(Remove the space between BMW & fans & also between the . & info)

It's either an Exide 110Ah, 850A or an AGM 90Ah, 900A.

Last edited by rebel.ranter; 02-06-2013 at 02:30 PM.
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