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Old 01-26-2013, 08:09 PM
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jsc jsc is offline
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Location: Calgary
 
Join Date: Sep 2003
Posts: 1,441
Mein Auto: E85 M-Roadster, E82 135i
Quote:
Originally Posted by 1series View Post
Thanks, im about to buy a good trickle charger and conditioner. A couple of questions:

1. Would you still take it into BMW and get a new battery installed given its history
2. Can you plug the trickle charger on and leave the car locked?

Thanks
You don't have to fit a BMW battery, an equivalent is fine, but on the 1M you are advised to register the battery so that it charges correctly, this process requires a suitable tool that a BMW specialist or dealer has. I have the Bavarian Technics tool that can also do this, amongst many other things, but it cost $287. If the new battery is not exactly the same as the original in terms of capacity and cranking amps, then coding is also required.

To put in the battery properly, a BMW specialist or the dealer is your best bet, as most garages won't be able to complete the full process.

I put our 135i on a Bosch C3 charger hanging from a rope on a hook in the ceiling of the garage, so that it is In front of the windscreen (so we don't drive off with it connected). I feed the cables under the back edge of the bonnet by the wipers and connect to the engine compartment charging points. the bonnet is closed and doors locked while it is on the charger.

Last edited by jsc; 01-26-2013 at 08:10 PM.
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