New battery causing problems

jb-slow · 05-12-2023, 01:16 PM

I just put in a new antigravity battery, I followed this video:

I installed the same battery and coded in and registered all the same settings as the video. The car is now throwing over voltage codes in a couple of modules and resetting, the weird part is it only happens when I hit the brakes, otherwise the car acts normally. Im seeing 14.8 volts when running. I could really use some suggestions to figure this out.

TheNine90 · 05-13-2023, 11:44 AM

You registered the battery as 60ah? What tool did you register the battery?

jb-slow · 05-13-2023, 03:23 PM

Everything exactly the same as the video using bimmercode/link

TheNine90 · 05-14-2023, 01:46 AM

Normal battery voltage should be 14.5v. What fault codes you are getting?
You can monitor battery voltage and alternator output to check at different scenarios.

jb-slow · 05-14-2023, 08:43 AM

14.8 and immediately sets over voltage codes in almost everything. Hvac, steering, radio, brakes, front collision system, the engine sound even changes. I swapped back to the old battery and everything is fine again. I'm waiting to see if antigravity has any ideas or if a replacement is needed.

05-12-2023, 01:16 PM	#1
jb-slow First Lieutenant 111 Rep 338 Posts Drives: m235i Join Date: Mar 2019 Location: puyallup iTrader: (0)	New battery causing problems I just put in a new antigravity battery, I followed this video: I installed the same battery and coded in and registered all the same settings as the video. The car is now throwing over voltage codes in a couple of modules and resetting, the weird part is it only happens when I hit the brakes, otherwise the car acts normally. Im seeing 14.8 volts when running. I could really use some suggestions to figure this out. Last edited by jb-slow; 05-12-2023 at 10:24 PM..
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05-13-2023, 11:44 AM	#2
TheNine90 Banned 577 Rep 2,047 Posts Drives: bmw Join Date: Aug 2021 Location: Workshop iTrader: (0)	You registered the battery as 60ah? What tool did you register the battery?
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05-13-2023, 03:23 PM	#3
jb-slow First Lieutenant 111 Rep 338 Posts Drives: m235i Join Date: Mar 2019 Location: puyallup iTrader: (0)	Everything exactly the same as the video using bimmercode/link Last edited by jb-slow; 05-13-2023 at 05:38 PM..
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05-14-2023, 01:46 AM	#4
TheNine90 Banned 577 Rep 2,047 Posts Drives: bmw Join Date: Aug 2021 Location: Workshop iTrader: (0)	Normal battery voltage should be 14.5v. What fault codes you are getting? You can monitor battery voltage and alternator output to check at different scenarios.
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05-14-2023, 08:43 AM	#5
jb-slow First Lieutenant 111 Rep 338 Posts Drives: m235i Join Date: Mar 2019 Location: puyallup iTrader: (0)	14.8 and immediately sets over voltage codes in almost everything. Hvac, steering, radio, brakes, front collision system, the engine sound even changes. I swapped back to the old battery and everything is fine again. I'm waiting to see if antigravity has any ideas or if a replacement is needed.
	Appreciate 0 Quote