3 series battery question?

freshpopcorn

It’s time to change the battery in the car.
I’m just doing a bit of research on them and I’m seeing ones priced at about €160 and then in the €300’s.
The ones in the 300’s say Start/Stop technology.
Am I correct if I got one of the ones in the €160’s the start/stop technology won’t work?

deckie27

I stand to be corrected but if you put a standard battery into a stop start car it will flupo op the battery as it will charge it with to many volts or something. ( this what my local motor factor told me)

bazz26

You may also need the new battery to be coded to the car depending on the model/year.

freshpopcorn

deckie27 wrote: »

I stand to be corrected but if you put a standard battery into a stop start car it will flupo op the battery as it will charge it with to many volts or something. ( this what my local motor factor told me)

The lad in my Motor Factors didn’t even know where the battery was.

colm_mcm

It’s not only the stop start element but usually these systems use regenerative braking so the battery is charged on deceleration at a higher rate than the alternator would put out.

The BMS will throw a wobbler either way so not really an option to use the wrong one.

freshpopcorn

Thanks.
When you put the reg into Micks garage it brings up all batteries..
It’s a 2010.

biko

Ring a dealer with your reg number. They will tell you what you need (you don't have to buy the battery there).

colm_mcm

Check what battery is in there now.

freshpopcorn

I gave the dealer a ring their and they also said €300.
I’ll have a good look at the battery tough.

colm_mcm

There will be a model number in the battery.

Del2005

Why are you changing the battery? Is it having trouble starting or something else that's giving issues?

freshpopcorn

Del2005 wrote: »

Why are you changing the battery? Is it having trouble starting or something else that's giving issues?

A little and the mechanic recommended it.

Cerco

freshpopcorn wrote: »

A little and the mechanic recommended it.

Are you driving the car regularly giving it sufficient time to keep the battery charged? A number of cars are having issues due to COVID restrictions limiting usage and journey distances. It may just require a recharge. Best thing to do is measure the battery voltage and monitor it over a couple of days using a multimeter. Saying that if it is the original battery it is probably due a change anyway after 10 years.
You will need to register the new battery in the car otherwise the charging rate will be excessive and limit the battery life. This is normally done by a main dealer but you can do it yourself if you can get your hands on an obd reader + phone app. è.g. Carly. If you are stuck there are independent BMW specialists who could do it for you.