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      08-07-2013, 04:28 PM   #3
bignosejim
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Drives: 2007 IB M Coupe
Join Date: Oct 2011
Location: DFW

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The proper tool would be something that would maintain a set voltage. Battery chargers don't necessarily do that. I haven't done any coding on my car yet because I don't have a proper charger. Here is a Schumacher INC-700A (they run around $375):



This is a recommended charger on Bimmerforums in their Diagnostics section. Not knowing how many amps our cars draw during a session I would err on the too much capacity side. I certainly would not do anybody's car without one and I wouldn't do big stuff on my car without one.
There might be a way to set up some ham radio equipment voltage regulators that would regulate voltage at the required amps. But I don't have any further info on that.

I really want to get rid of my yellow lights and was excited to see Shipkiller's post, but I don't think I'll do anything for a while since there are other things I want to do that take priority over coding.
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