battery

I’ve had a few incidents over the last year where I found that the voltage showed below 12V. Last night I went for a drive and I got some kind of message about low battery and it switched to AM radio. I decided to cut the drive short and go home. Turned out to be a good idea. My voltage showed...

My ultima alternator caught on fire... Went on about a 7 min drive to get food, parked, got food, and started driving home. Within a minute the car throws a warning saying some system features are disabled due to low battery. I check voltage and its at 10.8. I keep driving because I know if the...

My OEM battery just died at 29.9k miles. I’m considering replacing it with an EFB or AGM battery. Good idea or overkill? I live in the San Francisco Bay area so no weather extremes. Also looking for brand recommendations. Or should I just go with the delear’s motorcraft brand? Thanks for any...

Hey Folks, Happy New Year. Apologies since i'm a rookie so will try to provide as much info as possible, I've never posted on these forums nor did any car meetups even though i'd love to. Proud owner of a V8 Mustang back when I purchased it from the dealership back in 2021. GT Fastback...

Hey everyone, I made the decision to replace my stock 5.0 intake manifold with the GT350 voodoo. I did this because I was having persistent P308-P306 misfires and I read the GT 350 manifold could potentially solve those issues (it did)! Unfortunately, now I have a new mix of error codes I’m...

So I’ve heard that the factory batteries in these cars weigh a ton, so I am looking for a good lightweight battery for my 2020 GT Premium 401a with the 10 speed. what are some good ones that don’t weigh much?

Hey! So I replaced my battery today and dropped one of the plastic cover screw things somewhere in the engine bay. I can’t find where it would’ve fallen and didn’t see it on the ground. I assume it’s going to fall out at some point while driving. Do I need to worry about it messing anything up ...

My 2020 Mustang Ecoboost premium comes with the Motorcraft BXT96R590 Battery ( 56 Ah. 590 cca. ) factory. Any recommended replacement? EFB or AGM? :fistbump:

My 2020 Mustang Ecoboost premium comes with the Motorcraft BXT96R590 Battery ( 56 Ah. 590 cca. ) factory. Any recommended replacement? EFB or AGM?

Hello! I've owned my '17 GT for not quite two weeks, and I'm running into some odd battery issues. Some quick car details: 2017 Mustang GT, 6spd, 1,800 miles, twin turbo with ngauge and boost leash electronics (among other gauges). Car is in pristine shape, never driven in inclement weather...

Hello, I've just ordered the following kit: OPT7 Aura Pro Underglow I was wondering if I could get advice from others who have installed underglow. I installed a flex strip set on another s550 mustang and hated the wire cable management. We also connected directly to battery which I knew was...

I’ve got my subwoofers working now but when they start hitting my voltage goes from 14.4 to 12.4, and when I’m driving it dips even lower and makes my whole radio and cluster flicker off and then back on. Would it not dip if I get a second battery to my amp or better for a 240 amp alternator.

Late 2016 model, is it normal for the battery of the car to run out after being parked for 2-3 weeks? I try get someone to turn it on and leave it at idle for 5-10 minutes or so every couple weeks when I’m on holiday but i always come back to a dead car. Others told me their germans don’t give...

Are any of you GT500 guys/gals using an Antigravity battery? I see they are fairly popular with the S550 platform. https://antigravitybatteries.com/products/starter-batteries/automotive/ag-h5-rs/ https://antigravitybatteries.com/products/starter-batteries/restart-oem/atx30-hd/...

Hi, I’ve got a 2016 GT, which I love, but if I go away for more than 2 weeks, the battery dies if I don’t disconnect it. Yet all the other cars I’ve had can be left for months… I’ve tried with and without alarm on, and no difference. Anyone else seen this?

Hey All, I want to make sure I have this right before storing the Shelby, as this is my first winter doing such. I still have the OEM bxt-99rt4-a battery installed, and recently purchased the Ford Performance batter maintainer found here ->...

Has anyone been able to fit the XS D4700 in their 2018+ Mustang? I heard it should fit without any modifications but I think that only applies to 2017 and lower models.

Hello! I have a 2018 gt350 with 20k mi So I got a charging system service now error, battery won’t charge, so I replaced it. Then the voltage won’t go above 14 v and drop to 13 when throttle hard. So I replaced alternator After reset bms, voltage is constant between 13.9 and 14.1 but I still...

So I am not very mechanical or knowledgeable about cars. This morning when going to work I hop in my car, push the clutch, and push my start button. The car then proceeds to make a rapid clicking and doesn't start. I tried a couple times and same result. The odd thing is that the infotainment...

So I am not very mechanical or knowledgeable about cars. This morning when going to work I hop in my car, push the clutch, and push my start button. The car then proceeds to make a rapid clicking and doesn't start. I tried a couple times and same result. The odd thing is that the infotainment...