Caution on fully charging bmw e70 battery

[E-series ftw]

Funny how BMW uses IBS to take the load off the electrical charging system during certain driving conditions, whereas many other manufacturers are using these inertia pulleys on their alternators. It's simply a one-way clutch or sprague that drives the alternator under acceleration and free-wheels during deceleration. It takes a lot of stress of the drive belt and attached accessories too I'd imagine. But, being a mechanic myself, they are suscepible to failure, as I've already seen on a few vehicles. I'm interested to see if BMW follows suit on this new design adoption. Maybe they already have, since I'm not too familiar with anything in or beyond the G series.

[Crowz]

Originally Posted by E-series ftw

Funny how BMW uses IBS to take the load off the electrical charging system during certain driving conditions, whereas many other manufacturers are using these inertia pulleys on their alternators. It's simply a one-way clutch or sprague that drives the alternator under acceleration and free-wheels during deceleration. It takes a lot of stress of the drive belt and attached accessories too I'd imagine. But, being a mechanic myself, they are suscepible to failure, as I've already seen on a few vehicles. I'm interested to see if BMW follows suit on this new design adoption. Maybe they already have, since I'm not too familiar with anything in or beyond the G series.

Oh they use those already on the some e92's, F30's, etc and they do fail.


I just like old school charge the freaking battery. I expect the battery to be fully charged when I turn the vehicle off. Not Russian roulette on battery charge.