How many onwers have dead or low battery issues with AM DB9? Just trying to figure out something.

 

a common fault with high battery drain is to do with the bluetooth module, so may be worth mentioning if you have had battery problems if you have this item, i seem to remember a similar problem in the us with the sdars module as well,

 

Working on a project that will help stop this know AM DB9 problem.

 

After doing the reseach I made a retro fit the Otima Yellow top battery. I have been testing it for 2 months now and great battery performance. I custom built a extended 4gauge neg. battery wire and clamps and a extention bolts for the mount.
This is a way better way to solution that the $600 wet cell AM crap, low CCA, bad amp producing Battery. I can build kits of this cheap than one AM Battery.

 

A pic.

 

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And thats why the dealer OWNS you!!!!!! Aston Martin (David Brown's) charging/battery system design is bad. Thats why they have a Battery cut-off switch in the car. TALL-TALE SIGN of using a weak battery!!! My retro-fit fix, you just put it in a forget about it ,FOR MONTHS!!!!!! And I work on and sometimes design all types on performance systems for cars including Aston Martin's, Ferrari 348's and 430's, Viper's, high modded Supras, etc,etc. As a private company for the last 15years. I do FAA approved aircraft electronics/devices and installations as my other business, just to let you know where I am going from. Thats next level stuff from any car systems!!!! So find and fixing this problem was no sweat for me, It just made sence. Not just buying another Aston Martin wet cell vented maintenanced battery for $600 from the dealer like a sucker. Because when those batteries go dead, they are just very weak or just dead. Seriously the battery that Aston Martin put into their cars to crank a high compression V12 motor is a joke. Or using a 2amp battery tender with a Aston Martin name on it making that about $300 bucks if you dont have one with the car . And what Aston Martin dealer performs fixes for free? There was never a recall on the issue. Nothing is free up here in the Northeast coast......................

 

manny, this would be awesome...its the only thing about my maserati that blows. You think you can figure out a fix for that??? I love what you did with your car. We out to switch sometime btw...I was so close to buying the aston...

 

We will hook up a day to meet so we can talk about doing that. I know its a common problem. I even had same battery issue with my Viper in the beginning, until I switched out the stock wet cell with the sealed battery. Viper is easier to do as the battery is under the trunk below the bolted panel. The viper has a battery tray under there so you have a some room to play with. As the Aston and Maserati is different because those batteries are in the cabin And I would tell you one thing, I would not want a big wet cell VENTED battery sitting in the cabin behind me!!! Only sealed batts should have been in there. I can work out a retro-fit fix for the Maserati also.

 

the bat in my maser is actually in the trunk if that makes things easier for u...but ya, well obv hook up and check things out...

 

Nice to meet you on Saturday. Nice Maserati!!! I can help you with your issues.

 

dude, likewise. I definitely think you have the knowhow to figure things out with my pos italian fiama battery too...haha

 

Hi guys,

I have been reading the forum passionately for years but the latest series of events, led me to also become and active member from now onwards.

I would like to start with apologies for taking up your time but I really had no other good source of information. I am in Greece with my UK car and the dealer closed down and have been trying to find a local repairman ever since.

My car is a 30 June 2008 DB9 Facelift (470bhp) with 37500 miles on the meter.

I will give you the series of events that lead to this first:
- My car battery is around 7.5 years old and the previous owner must have replaced it with a simple Varta EFB and not AGM (judging from the price he paid at around 122 pounds beginning of 2017).
- The battery died and I jump started the car
- The car went into "Accident mode" with cabin lights on all the time, even with doors closes, but with everything else working well.
- After driving 20 miles or so, the car went back to "normal", cabin lights went off etc

Now, the last point says "normal" for a reason. I had noticed a little hesitant acceleration when driving those 20 miles, especially between 1500-2000 RPM and gears 4-6 and I was not sure but I thought I noticed a lump at idle too.

Fast forward 4 weeks after summer vacation, battery dead again. I fire up the car with a booster and take it to a shop for a charge. Left it a good 6 hours on the charger. Now, after the charge:

- The car has a check engine light on and clearly audible misfire
- The hesitation when accelerating comes at gears 3-6 1200-2200 RPM

Could this all be the symptoms of a battery just failing to run the car properly? I am very alarmed as the mileage and everything could indicate a coil pack/spark plug job and I am desperate as I do not know what to do in Greece other than take it to Italy to the dealer.

Thank you loads for taking the time to read and apologies for taking up your precious time.

Best regards,
John