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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, Jun-13-2018, 04:31:35 PM   #11
Paulo M
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Default Re: RS-30 lithium battery

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Originally Posted by cozmo kraemer View Post
I have a Braille GU1r for my daily driver and it is awesome! Similar to the posted battery, a little cheaper, definitely proven.
So it has that auto off and push start feature? Lmao this is the first time Iím hearing of this
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Old Wed, Jun-13-2018, 04:46:15 PM   #12
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Default Re: RS-30 lithium battery

All that weight saving is going to be offset by the jump starter you leave in your trunk. I can barely keep my Shorai alive, and I'm disconnecting the battery every day on track and leave it on a maintenance charger between events. The reason these things have auto cutoff is because if you let it get below 8V there's no coming back. If I leave a key in the ignition over lunch, the battery is dead.
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Old Wed, Jun-13-2018, 04:57:14 PM   #13
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Default Re: RS-30 lithium battery

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Originally Posted by CrookedCommie View Post
All that weight saving is going to be offset by the jump starter you leave in your trunk. I can barely keep my Shorai alive, and I'm disconnecting the battery every day on track and leave it on a maintenance charger between events. The reason these things have auto cutoff is because if you let it get below 8V there's no coming back. If I leave a key in the ignition over lunch, the battery is dead.
Isnít one of the new feature the self jump start button on the battery itself? As in, no need to worry about jumper cables?
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Old Wed, Jun-13-2018, 05:22:54 PM   #14
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Default Re: RS-30 lithium battery

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Isnít one of the new feature the self jump start button on the battery itself? As in, no need to worry about jumper cables?
No idea, but I had to jump my Shorai multiple times this weekend before it finally recovered enough to be able to fire up the car. It doesn't have any auto cutoff or turn off features, also why it costs $190 and weighs 4lbs.
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Old Wed, Jun-13-2018, 05:26:14 PM   #15
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Default Re: RS-30 lithium battery

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Originally Posted by CrookedCommie View Post
All that weight saving is going to be offset by the jump starter you leave in your trunk. I can barely keep my Shorai alive, and I'm disconnecting the battery every day on track and leave it on a maintenance charger between events. The reason these things have auto cutoff is because if you let it get below 8V there's no coming back. If I leave a key in the ignition over lunch, the battery is dead.

Exactly. Kind of dumb to take a risk in a street car. If the battery goes into self preservation mode, wouldnít you lose the system memory as well?


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Old Wed, Jun-13-2018, 05:32:06 PM   #16
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Default Re: RS-30 lithium battery

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Exactly. Kind of dumb to take a risk in a street car. If the battery goes into self preservation mode, wouldnít you lose the system memory as well?


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Old Wed, Jun-13-2018, 06:04:51 PM   #17
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Default Re: RS-30 lithium battery

I use the AG ATX-20. It’s been great so far. It spends most of it’s time connected to the battery maintainer when parked in the garage. I drive this car to the track and sometime park it overnight and every time the car has started strong. I just went out to the garage because I realized I left it off the maintainer for 3 days. Checked it with a multimeter and it has a 100% charge.
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Old Wed, Jun-13-2018, 06:05:50 PM   #18
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Default Re: RS-30 lithium battery

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I use the AG ATX-20. Itís been great so far. It spends most of itís time connected to the battery maintainer when parked in the garage. I drive this car to the track and sometime park it overnight and every time the car has started strong. I just went out to the garage because I realized I left it off the maintainer for 3 days. Checked it with a multimeter and it has a 100% charge.

I think the biggest variable and issue is going to be ambient temp. Especially when it drops below 50 degrees.


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Old Wed, Jun-13-2018, 07:28:27 PM   #19
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Default Re: RS-30 lithium battery

You guys keep comparing this to standard lithium batteries, I don’t want that either. Reason for this thread is to confirm if these new features work. Features that aren’t in standard lightweight lithium that you guys are talking about.
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Old Wed, Jun-13-2018, 08:17:47 PM   #20
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Default Re: RS-30 lithium battery

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You guys keep comparing this to standard lithium batteries, I donít want that either. Reason for this thread is to confirm if these new features work. Features that arenít in standard lightweight lithium that you guys are talking about.

I had no idea that was what you were getting at in your initial post. I just read it as another LI-Ion battery, with maybe a couple additional features. The auto off feature is definitely in a few other manufacturers current offerings. I have no idea on the jump start feature, but it doesn't seem worth the premium in price to me.

I have had zero negative repercussions of running the Braille, both daily, and after it had sat for several months without driving. It has been solid and issue free.
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Discussing RS-30 lithium battery in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)