325i battery

[sparkyk4]

hey, might sound dumb but what is the right battery for a 91 325i ? i mean amps, amhs, rating, size ? put my old 318i one in and its sparked my 325 up a bit, but both seem to small for compartment ? any ideas or help would be great.
thanks

[kolee]

Most batteries will work, but they take alot of power to crank big motors over.

When motors are cold they can take longer to start. This can drain a small battery quickly, but start it fine on warm days.

I think a 780amp start up is about what you need.

Avoid halfords cheap shite, bosch are way better.

[MurphyE30]

I have a Brand new heavy duty battery from Bmw bought for my 2.7 here cost me £140

will take £60 for it if you are interested? iirc the cheap shit you get from halfords cost more.

[kolee]

I have a Brand new heavy duty battery from Bmw bought for my 2.7 here cost me £140

will take £60 for it if you are interested? iirc the cheap shit you get from halfords cost more.

Yes they do. I paid £96 for my first home brand halfords battery. The Bosch ones were £126, the £30 saving is false ecomonmy.

£60 is a bargain!

[sparkyk4]

thanks for replies,
780amps is high, think the one i have in there now runs about 560amps, thats not enough, the original one in the new car runs 590amps, both dont sound to good !
Murphy.. do you know the rating of your heavy duty one ?

[Blitz]

096 is the type

[kolee]

thanks for replies,
780amps is high, think the one i have in there now runs about 560amps, thats not enough, the original one in the new car runs 590amps, both dont sound to good !
Murphy.. do you know the rating of your heavy duty one ?

590 is what i have in my astra, 1.6! I think the crappy halfords one is 640. If your car is running smoothly, it wont cause a problem, but on those days when it takes a few turns to get it moving....

[sparkyk4]

yeah tho's mornings are coming ! 590 is low int it

thanks Biltz..
do you know the rating of that 096, and do you know if there a bit bigger ?

[Simon13]

65amp is correct factory, 70 is better and a 75 cranks um like a banshee!

[sparkyk4]

just been and checked the original that came with the car and its only 60amp ?
need a new battery soon !
is it.. that when you disconnect the battery the ecu has to re-learn settings ?
as mine idles slightly higher with the lesser battery in it, or is that just temporary ?

[kolee]

Battery only affects starting the car, after that it should be running under its own power.

[sparkyk4]

must be some truth in that ecu re-learning maybe ?

[mrb27]

yh im my experance they do, will be a bit lumpy and stinky on startup but just take it out for a spin and it will map itself after 20 mins i think it is, i had problems with bosch batterys not so long ago, the issued battery was a lot smaller than my battery tray and after a few days it died.. took it back and got another and same thing, 2 days and dead! i thought i had a power drain but all checked ok, went for an excite battery and its golden

[Brianmoooore]

096 is the type

In my experience, disconnecting a good battery and connecting up another one doesn't screw up the ECU settings. Problems arise when you drain every last drop of life out of a dead battery trying to start the car, with the engine just managing to turn over until it grinds to a halt.
Wife's E36 325i is currently running on a 1.1 Peugeot 106 battery, slightly bigger than a torch battery!

[Gouki]

I bought one earlier in the year from ECP. Its a Bosch 096 S4 with a 4 year warranty. Its 74ah and 720cca. More than adequate to power an E30.

[Morat]

I like the biggest one that will fit, so when I leave my lights on at work I can still get home