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      01-30-2013, 10:35 AM   #177

Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

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Having run the Deka ETX30L that Braille rebadges as its 21 lb battery in my 99M3, I would not run it in my E90M3 unless I lived in a warm climate and did not mind trickle charging it. I live in NH and drive my cars year round and do not want to be bothered with a trickle charger. The ETX30L lasted one year in my 99M3. It did make it through the first winter, but could not handle even the beginning of the second winter.

I pulled it and swapped in a Mini battery. No issues with that in a couple of years. I would consider trying one in my E90M3 although I would not expect it to last more than a couple of years. However, I am not sure I am desperate enough to save 20 lbs to buy a battery that will not last as long as a stock one. I have to think about it since I will be due for a battery -- my stock one is nearly 5 years old and that is a good lifespan for an E90M3.

Whatever I buy will be an aftermarket battery since I have no interest in overpaying the dealer and then arguing with them. This is a very common problem these days. I went through it with my wife's 08 535xi. The first dealer ignored my request, replaced a cable instead, and the battery died again days later. We had BMW roadside assistance tow it 40 miles to another dealer, which diagnosed it correctly and replaced the battery. BMW spent twice as much as it should have on that repair. I don't use the first dealer, Tulley in Manchester, NH, anymore since I have no patience for overpriced incompetence that wastes my time.
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      01-31-2013, 11:24 AM   #178
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Drives: AYF80
Join Date: Jul 2007
Location: Fort Lauderdale

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Originally Posted by HP Autowerks View Post
Braille didn't designed their batery to be CA certified nor do they plan on doing that.

We don't know the exact amp draw when all modules are in the sleep mode. We will need to get a car in with CA to validate the current draw.

Note: Unless your daily commute is 20-30 minutes or longer on the highway, don't expect your battery to be at 100% charge. A 135i that was just at my shop with an oem battery driven from SF to SB, 70% charge! My personal 335i with the Braille 15 lb battery sitting for 2 weeks, 60% charge. The only way to get close to 100% charge is to charge it with a smart battery charger, then do your test.
I know this post is from 09, but I've seen it repeted a few times; CA should not draw when in sleep mode. Only things that need date and time like the radio should draw at all. I think the max draw should be around 20 milli amps.
Originally Posted by JBasham View Post
Caddy ATS . . . finally, a decent rental car option.
Originally Posted by kchu221 View Post
the wheels make me mad...
Originally Posted by mhabs View Post
It's one thing for some buffoon to put an M badge on something that doesn't deserve's another for a multi-billion dollar corporation to do the exact same thing and keep a straight face.
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      07-16-2013, 02:54 AM   #179

Drives: 13 335is
Join Date: May 2007
Location: N.Y.C

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I would love do this mod will cause issues ? Live in NY
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      02-16-2015, 10:44 AM   #180
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Drives: 2012 M3 AW DCT ZCP ESS 625
Join Date: Apr 2012
Location: Long Island NY

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There's no way I could do this mod living in NY. It's been sub 30 degrees for a couple of weeks now and not getting warmer. Just started my car after sitting 2 days with stock battery, and she barely cranked over. My dash cluster wasn't even clear (something I've never seen) due to the cold. Sucks cause I'm looking for inexpensive weight savings ��
ESS VT2 625- GTS DCT Tune- Full Challenge Exhaust- Mode Carbon- Other Stuff
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