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Despite my preference for the economical battery replacements of the 1970's through 1990's (e.g., Sears Die Hard), I do recognize that the E82 I'm now driving is a mechnical system operated largely by a computer (DME) that has many hundreds - or thousands - of parameters.
The battery replacement cost is absolutely a sting compared to "the good old days," but then again I wasn't driving 130MPH on a track "back in the good old days." Definitely I won't be looking for workarounds to BMW engineering. I have to trust that they designed and spec'ed the battery in exactly the way they did for sound engineering reasons and with the entire mechanical and electrical/electronic system in mind (what the heck else would they have done?).
So, ya know, I'll suck it up and pay what's needed to have this major component replaced correctly and according to spec rather than to second-guess BMW engineering. Kinda think that bootstrapping a "cheap" battery and half-guessing the correct DME coding for it is a bit shortsighted.
But that's just me.
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2011 135i 6MT, Cobb FMIC, Stoptech ST-60, Pagid RS-29, Castrol SRF, Goodridge G-Stop, Apex EC-7, Dinan Front Sway, Ohlins R&T, Swift 400/500, Vorshlag Camber, M3 lowers & bits, Diffsonline 3.08 3-clutch, Sparco Ergo/Evo, Schroth Hybrid, RRT welded 4-point hoop
DD: BMW 328xiT Prior: 2000 323iT 5MT, 2000 Z3 2.3 5MT, 2001 325iT 5MT, 2009 128i 6MT
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