irs cold - dead Z4M

Sounds good but if the battery is knackered it won't hold a charge for long. I'd be worried it would give up on me while I was away.
 
My battery has given up the ghost, I thought about a charger but I would rather spend the £50 towards a new battery, than use it and find that in a few days the battery is flat again and still requires replacing..
 
DTR said:
I have a very encouraging update !

even though the car is under extended warranty - as you all know batteries are not covered and I would probably be pushing my luck to ask for a replacement of the battery I had (which was replaced less than 2 years ago), to take it into my dealer ship would have encountered charges for diagnosis, and probably a new battery at their rates... alternatives were the new Bosch Silver Plus battery as previously mentioned by other forum members (about £122 from halfords but you get a free toolkit if you order online).

So I decided to bite the bullet and try and fix it myself - I bought a new battery charger, A Ring, Powerring smart battery charger (8 Amp) from my local halfords last night, got it home and took out the battery and hooked it up on the kitchen worksurface (as you do). First pass said it had no amps and about 3v in it, first charge run said the battery was broken and needed replacing.

However, this particular charger has a special deep reconditioning function for knackered / old batteries - so I thought "nothing to lose" and went for that. That spent the best part of the entire night running and just before leaving for work this morning, it finished the reconditioning cycle and switched to charging - So I left for work (in the other 1/2's 1 series) and came back this evening to find the battery completely juiced up and the charging cycle complete.

I have just put it back in the car, alarm went off (as you would expect), and I had to reset the clock and the time but that was it. I did notice that the radio came on as soon as I fired her up - so maybe this is where the bug/drain is ??? who knows. Anyway, everything is working and I had no issues with the clickety click behind the console - it seems to be working just like a fresh new battery without issues - so far so good. :D

here is the link to that charger with the reconditioning function - it was 50 something quid but has saved me probably over 200, plus allowed me to keep my OEM battery (and not kill my warranty probably).

http://www.halfords.com/webapp/wcs/..._productId_532907_langId_-1_categoryId_165629

worth every penny I think as it goes that extra mile to recondition a battery that I would have otherwise replaced. :D :D :D
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I did the same as you. However, 3-4 weeks later I still needed a new battery despite that one working perfectly during that time. You can get the Bosch Silver for £79 online buy that. Its even a few kg less than the OEM one :)

New battery 2 months in still works great.
 
I've been having a very simular issue with my Z4M Roadster which seems to be getting worse. If I leave the car for over 2 days the battery completly drains. When I then use a Halfords car charger connected to the + - under the hood it claims it is fully charged after about 30 minutes and If i take it off charge then it only lasts for maybe 1-2 hours. I have began charging it overnight which seem to make the battery last longer but still drains. I also took it to get its battery checked and was told the battery is 100% health. From reading everyone elses problems I'm hopeing biting the bullet and buying the Bosch HSB096 will fix the problem.

I do have a question about when fitting the battery I have been told by some people that if i disconnect the battery I may lose the radio keys etc, will I have to have the car on charge through say the halfords charger? and can I just trust the guy at Halfords to fit it without issue?
 
I changed mine fine, you don't have to worry about radio keys etc. :thumbsup:

Sounds like you might have something bigger at fault though that is draining the battery down. Especially if it has been confirmed 100% healthy. Do you have any audio devices or chargers etc? Mine was an intravee that wasn't sleeping thus powering an iPod I have connected until the battery ran flat.
 
Just trying to find this battery on halfords coming up as £126.99
heres the link. is this the correct battery, its nearly stealer prices.

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_734753_langId_-1_categoryId_165762

Can someone tell me i'm looking at the wrong thing and there is something thats cheaper.
 
playalistic said:
I changed mine fine, you don't have to worry about radio keys etc. :thumbsup:

Sounds like you might have something bigger at fault though that is draining the battery down. Especially if it has been confirmed 100% healthy. Do you have any audio devices or chargers etc? Mine was an intravee that wasn't sleeping thus powering an iPod I have connected until the battery ran flat.
Click to expand...

Thats weird. My old E39 switched off all ancilliaries except the alarm automatically.
 
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