Hi Guy's,

Am getting a low battery charge on my 08 E61. I imagine the battery is shot as it is resetting my clock and date. I have called Duffys and they want E350 for a replacement battery, registering and coding which to me seems ridiculous.

Have been doing a little research and told standard 5 series battery is no good as I have stop start technology. I have been in halford's and am told I need an AGM battery which is for stop start technology cars with brake regeneration. Seemingly these cars don't have an alternator?? They can supply for E219. However I am worried that they won be able to register and code?

Can anyone give me the definitive on how to buy a battery and get it installed for as little as possible? Who should I get to install does it need registering and coding?

Thanks