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      04-05-2013, 02:41 PM   #35
dbs600
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Drives: 2011 750LXi Individual
Join Date: Apr 2010
Location: New York, NY

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Quote:
Originally Posted by Dandle View Post
No and if they try and fob you off don't let them. The battery fitted to our cars is an AGM battery (Absorbed Glass Matt), Its whats known as a deep cycle battery and is used in applications where they get heavily used a lot both discharging and recharging frequently (such as campers and caravans). They use them on our cars because of the electrical system charging and discharging so frequently with the likes of brake regeneration etc. If it wont hold a full charge then it is clearly faulty.
This is exceptionally helpful; thank you!

I was told that when it isn't fully charged, sulfur builds up and damages the battery; not sure whether or not true, but even one instance of going flat should not result in not being able to fully charge the battery as you say.
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