Battery drain or not?

[ab1702]

Car wouldnt start last week because the battery had gone down to 10 volts (according to android head unit). The android unit hadn’t been turning on properly for a couple of weeks so I assumed that was the problem and sorted it out and charged the battery back up and has been fine since.
This week I’ve got round to testing it with a multimeter to see if something was draining it and I have a drain of 0.19 amps (190 miliamps). This starts at 0.80 amps when I connect the multimeter but after about 20-30 seconds it settles at 0.19 amps drain so I assume it’s the car/ecu doing what it does when it gets a connection back to the battery.

I have totally unplugged the android unit while having the multimeter connected and it made no difference so that’s not a problem and I haven’t pulled any fuses as of yet.

Is 0.19 amps (190 miliamps) too much of a parasitic drain on the battery overnight etc?

 

[Will1893]

Following

I've had this exact problem for over a year now including the exact same multimeter reading. If you leave the multimeter connected for even longer it goes down again to 0.10-0.11.

My cars battery is dead after 2 days of standing.

Sent from my SM-G981B using Tapatalk

 

[ab1702]

Following

I've had this exact problem for over a year now including the exact same multimeter reading. If you leave the multimeter connected for even longer it goes down again to 0.10-0.11.

My cars battery is dead after 2 days of standing.



Sent from my SM-G981B using Tapatalk

Yours is dead after 2 days of driving or none driving?

edit

sorry I thought it said two days of driving

 

[NHN]

2 days standing dead battery with that drain signifies a battery on its way out tbh, get it tested.

Only thing you can do is start pulling fuses & see what drops or put meter in fuse points & test load when locked.

 

[Will1893]

2 days standing dead battery with that drain signifies a battery on its way out tbh, get it tested.

Only thing you can do is start pulling fuses & see what drops or put meter in fuse points & test load when locked.

I got a new battery about 9 months ago and it didnt change anything.

I did test fuses and found that when I removed the fuse for the circuit that contains the central comfort convenience unit (fuse 3 in engine bay if I remember correctly), the drain went down to 0.4a. I got a second hand unit and replaced it but it controls central locking so have to open by key and can't open boot until I recode it with my key fob.

The drain was still the same after replacing.
Is 0.1a a significant drain?

Sent from my SM-G981B using Tapatalk

 

[ab1702]

I got a new battery about 9 months ago and it didnt change anything.

I did test fuses and found that when I removed the fuse for the circuit that contains the central comfort convenience unit (fuse 3 in engine bay if I remember correctly), the drain went down to 0.4a. I got a second hand unit and replaced it but it controls central locking so have to open by key and can't open boot until I recode it with my key fob.

The drain was still the same after replacing.
Is 0.1a a significant drain?

Sent from my SM-G981B using Tapatalk

It obviously is if you’re battery is going dead. I’ve been reading online and apparently most cars will not have a drain of more than 50 miliamps so I think we both need to find what is causing our problem

 

[The_Redhead]

I have the same problem. If not drive it or start it and leave it for a while every 2 days, the New car battery is gone.

 

[ab1702]

I’ve sorted mine, it was to do with the android unit and a power cable I had running from it. I’ve got the battery drain down to 0.02 amps(20 miliamps) now and that’s with the android unit still in. If I take the unit out it fluctuates between 0 and 0.01. Apparently anything less than 0.05(50 miliamps) is acceptable.

For those that have said you have the same issue then you need a multimeter and you need to google how to find a battery drain, it’s quite simple actually. I would start by unplugging anything electrical you may have added to the car just as I did with the android unit as I had a gut feeling about it. Failing that youve then got to start pulling fuses out one by one until the drain disappears which could become a lengthy process.