FYI: OEM Battery Life

[3Series]

FYI,

My orignal battery (AGM) is approaching it's 8th year of service (it will be 8 in Jan/Feb 2014). 62k miles on the car.

1/2007 build E70 3.0si.
Nav, Heated Seats, Rear Entertainment, rear climate (power accesories)

The battery on my car is stamped with 05 07 which I'm estimating is a 5th week of 2007 battery.

[motordavid]

Congrats, sort of.
I rec'd a new batt, a slow maintenance charge on that new batt for a day or so, and then install that new batt: on your time/at your convenience, vs it dying at the least opportune time.

And, I think E70s need to have their new batts 'introduced' to your car's BMW fine system of electronic gobbledy gook.
GL, mD

[x5745li]

Battery life is grately influenced on how you use your vehicle.
If you drive the vehicle daily the battery will have a longer life vs. driving and letting it sit which decreases the life since the battery is not maintained on a regular basis. My 2009 battery laster 3 years. Also climate has a big impact. Here in florida batteries tend to last 3 to four years max. The heat eats them.

[nachilus]

Originally Posted by x5745li

Battery life is grately influenced on how you use your vehicle.
If you drive the vehicle daily the battery will have a longer life vs. driving and letting it sit which decreases the life since the battery is not maintained on a regular basis. My 2009 battery laster 3 years. Also climate has a big impact. Here in florida batteries tend to last 3 to four years max. The heat eats them.

You are correct, The battery in my X5 is the original and it still have a lot of life in it. keep in mind I drive my X everyday.