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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

View Poll Results: Which is the best Battery Tender for my E9X BMW
Get a CTEK Smart Charger 21 37.50%
Get a Deltran Battery Tender 22 39.29%
I have neither but I just wanted to vote 13 23.21%
Voters: 56. You may not vote on this poll

 
 
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  #11  
Old 11-07-2012, 05:31 PM
galahad05's Avatar
galahad05 galahad05 is offline
Better with Butter
Location: Long Island, NY
 
Join Date: Aug 2007
Posts: 2,217
Mein Auto: 335i sedan 6MT
Quote:
Originally Posted by Nordic_Kat View Post
From what I understand, sulfation is a progressive process, and being a chemical reaction is with no doubt accelerated by temperature. My thought process is by starting with this fresh battery and proactively maintaining it in spite of my "bad behaviors" (state in my above post), I can prevent the new battery from ever sulfating. That is where my interest in the feature originates.

Honestly, I'm not a battery engineer (is that an actual title?), but I did find this:

http://www.ehow.com/how_8067839_prev...batteries.html

and

http://www.flyingbeet.com/electricg/batteries.html

and

(these guys are very good)
http://batteryuniversity.com/learn/a..._to_prevent_it


Synopsis: keep the battery topped up and you should essentially never see any sulfation (or at least enough to get symptoms).
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