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      12-02-2011, 08:30 AM   #2
raj55
Second Lieutenant
 
Drives: E91 2009, 320i
Join Date: Mar 2009
Location: SWEDEN

Posts: 267
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Why not leave the battery connected to a smart battery charger like the C-TEK while you are away? It will trickle charge and keep the battery at an optimum level when you return after some months. It even has acharge level memory and a re-start ability after a inadvertent electrical power cut off. BMW sells the same charger branded as its own.


http://smartercharger.com/battery-ch...ti%20US%203300

Last edited by raj55; 12-02-2011 at 08:34 AM. Reason: include the site for C-Tek charger.
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