|
|
12-07-2020, 08:50 PM | #1 |
Major
830
Rep 1,254
Posts |
Time to replace the battery: Lightweight options?
Hey all - so I'm getting the darn "increased battery discharge" warning so I figure it's time to replace the batter and why not do so w/ a lightweight option. I know the Lithium battery technology has come down a bit in price...definitely don't want to pay $800 for a battery. What have you guys done? My car is driven a couple of times per week at most, sometimes once a week. I see the "Antigravity" batteries are still in the $700+ range. Does anyone know what the lowest amp hours is that we can "get away" with? Are there any smaller batteries that fit? My car isn't a "fat spec" but I like to keep her svelte if I can.
__________________
2009 E92 M3 build thread: https://www.m3post.com/forums/showthread.php?t=1754875
Follow me on IG - www.instagram.com/the_driven_enthusiast |
12-07-2020, 09:16 PM | #2 |
First Lieutenant
620
Rep 327
Posts |
My car previously had a ETX20L in it. Worked fine as long as the temps were above 40 degrees and the car didn’t sit without a tender for more than a day.
Fried the FRM after getting low one too many times. Fixing that cost more than the antigravity would have in the first place. Buy the antigravity. Buy once, cry once. I can leave the car sitting for 3 weeks and it starts up perfectly, no tender, no BS. Weighs less than the mini battery did, mounts to stock mounts, and has 1200CA. I couldn’t be happier with that particular spend. |
Appreciate
1
slcook541863.00 |
12-07-2020, 09:26 PM | #3 |
Lieutenant General
11586
Rep 12,726
Posts |
lots of discussion here. z4m or mini cooper battery might be a compromise for you.
https://www.m3post.com/forums/showth...1#post19103181 also, sign up for the antigravity email list. they have pretty good sales around the major holidays.
__________________
Instagram; @roastbeefmike
Last edited by roastbeef; 12-07-2020 at 09:56 PM.. |
Appreciate
1
94jedi830.00 |
12-07-2020, 11:00 PM | #5 |
Colonel
1258
Rep 2,492
Posts |
The H6 Diehard from advanced is 34 lbs, down about 27 from the 61 pounder i traded in, and it was 130 bucks, i really wanted a lightweight one but couldn't shell out an extra 600 bucks for 20lbs less weight.
AH is 50, however, I really don't have many electronics. Has not given me any issue since.
__________________
2010 E92 M3 DCT
|
Appreciate
1
94jedi830.00 |
12-08-2020, 12:42 PM | #7 |
Major General
2760
Rep 5,483
Posts |
LiFePo is perfectly suited for long periods sitting. There's virtually no parasitic loss internally, and most of the BMS-equipped batts will shut off if they draw down low enough where tehy might not start thec ar and/or a cell balance issue could be starting
My Voltphreaks has been in the car for almost 4.5 years now. Daily during the not-salty months, can sit for weeks in the garage without being touched and still starts fine.
__________________
|
Appreciate
1
//steve\\1074.00 |
12-08-2020, 01:01 PM | #8 |
Colonel
1478
Rep 2,672
Posts |
As someone who charges my battery with a tender once every 6-8 weeks the idea of a battery that doesn't need to be topped up as often alone is appealing, plus the weight loss of course.
__________________
2021 Alfa Romeo Stelvio Quadrifoglio | 2.9L | Trofeo White Tri-Coat | 8-spd
|
Appreciate
1
//steve\\1074.00 |
12-08-2020, 01:23 PM | #9 |
Major
1074
Rep 1,027
Posts |
I know for me when the time comes the right move feels like pay up for the good ones with the extra tech instead of trying to save a few $$s on the cheap options. I owned a tender and have never made it part of regular practice to use it. Seems like an annoyance more than anything so I don't bother with it. This is a non daily driven car that sometimes sits for several weeks at a time without getting driven although rarely more than 3-4 weeks.
__________________
Steve::::2012 AW E92::::IG - @sjs0433
|
Appreciate
0
|
12-08-2020, 03:10 PM | #10 | |
BimmerPost Supporting Vendor
8211
Rep 18,823
Posts
Drives: BMW
Join Date: Nov 2005
Location: Anaheim, CA
|
Quote:
SI B01 20 16: https://bimmerscan.com/wp-content/up.../B012016-1.pdf We've been doing a lot of testing for Antigravity throughout the years, the lineup is fantastic for the E9X chassis.
__________________
Tom G. | european auto source (eas)
email: tom@europeanautosource.com · web: https://europeanautosource.com· tel 866.669.0705 · ca: 714.369.8524 x22 GET DAILY UPDATES ON OUR BLOG · FACEBOOK · YOUTUBE · FLICKR · INSTAGRAM |
|
Appreciate
1
SYT_Shadow11490.00 |
12-08-2020, 03:16 PM | #11 | |
///M Powered for Life
11490
Rep 10,329
Posts |
Quote:
|
|
Appreciate
0
|
12-08-2020, 06:06 PM | #12 | |
First Lieutenant
620
Rep 327
Posts |
Quote:
Mine is a late 2011, had FRM3 from the start. The FRM failed at the same time that the car was attempted to be started with a too-low battery. Immediately after that a bunch of the body controls did not work. So I correlated the low voltage from the (crap) motorcycle battery with the FRM failing.
__________________
Chris
|
|
Appreciate
0
|
12-08-2020, 06:16 PM | #13 | |
BimmerPost Supporting Vendor
8211
Rep 18,823
Posts
Drives: BMW
Join Date: Nov 2005
Location: Anaheim, CA
|
Quote:
FRM3s don't usually brick, most likely it can be brought back. E9X is pretty power hungry, until it enters full sleep and needs a battery that can sustain it.
__________________
Tom G. | european auto source (eas)
email: tom@europeanautosource.com · web: https://europeanautosource.com· tel 866.669.0705 · ca: 714.369.8524 x22 GET DAILY UPDATES ON OUR BLOG · FACEBOOK · YOUTUBE · FLICKR · INSTAGRAM |
|
Appreciate
0
|
12-08-2020, 06:36 PM | #14 | ||
Brigadier General
3989
Rep 3,409
Posts |
Quote:
__________________
Not a Doctor, those are just my initials.
|
||
Appreciate
0
|
12-08-2020, 08:29 PM | #15 | |
Captain
1565
Rep 672
Posts |
Quote:
Also ran an ATX-30-HD on my 135i. Weighed 8 lbs. Never had an issue. Can't say enough about Antigravity...
__________________
|
|
12-08-2020, 10:25 PM | #16 | ||
Brigadier General
3989
Rep 3,409
Posts |
Quote:
__________________
Not a Doctor, those are just my initials.
|
||
Appreciate
0
|
12-10-2020, 05:52 AM | #17 |
Colonel
5355
Rep 2,806
Posts
Drives: '09 E90 M3 - IB
Join Date: Feb 2012
Location: 93 million miles from the Sun
|
Not the cheapest option, but VoltPhreaks VPR-P6 weighs 6 lbs and has been awesome. We installed a remote power button on the dash that completely shuts off the battery when the car is going to sit in the trailer for long periods of time.
This year, the car sat in Texas in a trailer for 7 months. It fired right up like no time had passed. Very impressed with VoltPhreaks. |
Appreciate
5
|
12-10-2020, 12:42 PM | #18 | |
Major General
2760
Rep 5,483
Posts |
Quote:
__________________
Last edited by Richbot; 12-10-2020 at 12:47 PM.. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|