BMW Genuine Factory OEM 82110406881 Advanced Battery Charging System

The BMW battery tender does just what it supposed to do. Keep the battery charged. I have a 750Li that is not driven as much as the everyday car, so I have been having some issues with low battery warning lights on my dash. Apparently these cars use a lot of power each time you open a door, or do some short drives, (less than 10 miles a day.) If the car sits for a few days the car's charging system does not have enough time to bring the battery up to full charge.

The battery tender is very easy to use and it charges the battery and then shuts itself off and monitors the battery condition. If the power in the battery should drop below a certain level, the chargeer kicks on and brings the battery back to full charge.

The only flaw is the alligator clips are somewhat small and have to be almost fully opened to find on the battery terminals under the hood. They could have made the clips a little larger.

But for the price, and the fact that it is a BMW approved battery charger, it keeps a BMW battery fully charged.

My 535 has had an annoying clock reset this past year because of 'weak battery warning'. It's only driven very little and the many electronics in this otherwise wonderful car has drained the battery. The limited driving was not enough to sufficiently keep it it fully charged. So enter this battery charger, worked wonderfully and fully charged my battery overnight...

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I use this on my BMW, my gargen tractor and all my other 12V batteries. It's safe and it works fantastic...

Update: Almost three years later and it's still working perfectly. We're retired and as such our BMW doesn't get driven every day so it stays on the charger almost 100% of the time in between trips. When I take it off the car I usually just move it to my Troybilt garden tiller or garden tractor. A really great product that belongs in everybodys garage.

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The charger works great and meets all expections needed for storing our Z4 for the winter. It was also the best price we could find.

Thanks,

Ken

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When I receive the product, it was open. But it seems in good condition and fairly new. I was not able to use it since the car battery was already dead even when I had it charged. So I bought a new one. I will be using it in 3 weeks time and then I will update my review.

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