E89 battery conditioner question

[ashway]

On the BMW accessories site there is a battery conditioner

http://www.bmw.co.uk/bmwuk/owner/accessories_enqui... conditioner
The battery conditioner is a handy size and easy to use. Simply plug it into the socket in the luggage compartment to start charging. Charges 12 V batteries with a capacity of 1.2 Ah to 120 Ah and guarantees maximum battery life. Perfect for vehicles which are only used occasionally or for short journeys.

Price from £87.00 *

Available for 1 Series 3-door, 1 Series (five-door) up to 09/11, 1 Series Coupé, 1 Series Convertible, 3 Series, 5 Series, 6 Series, 7 Series, BMW X1, X3, X5, X6, Z4


in the description it says to be plugged into the power socket located in the boot.

A couple of questions have all Z4s got a boot power socket and secondly If its the same as the cigarette lighter in the centre console its not permanently live. In order for a conditioner to work I thought it had to be plugged into a permanently live power socket.

any help appreciated, wife's car and its not being used much now we're heading into winter

Edited by ashway on Thursday 1st December 18:44

[E30M3SE]

Battery conditioners are available for about half that from other sources, if you want the lighter adapter they are £8.90 so still £30+ cheaper, personally I hard wire to the battery.


The BMW unit is a rebranded CTEK.

Edited by E30M3SE on Friday 2nd December 15:08

[fflyingdog]

Halfords do quite a few,i have had one on my Lotus for years ,it starts as though its a fresh brand new battery every time ,i hard wired mine onto battery.




ETA .Spelling

Edited by fflyingdog on Saturday 3rd December 16:23