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The heart of any electric vehicle is its battery. This BMW i3 cutaway shows the battery removed from drive module.  When it comes to electric cars, it’s all about the battery. Well, it’s not quite that simple, but given how important the battery is to the cost, range and performance of the vehicle, it’s pretty close. When someone is considering purchasing their first electric car, they will certainly have a lot of questions.   The one question that seems to be on nearly everyone’s list is: “How long will the battery last?” The problem is, it’s been very hard to answer that question authoritatively because we just haven’t had enough data.   That’s because modern electric cars that are powered by high-voltage lithium ion battery packs have been on sale for less than ten years, and long term testing results simply weren’t available.   In fact, the Nissan LEAF was the first high-volume all-electric car brought to market, and that model has only been on ...

With the i3 REx, Reduced Power can occur if the operator continues to use more energy than the REx engine can produce. Examples of this would be continued high speed (over 70 mph) driving or long, sustained hill climbing. However this new problem that has plagued some i3 owners isn't caused by over-taxing the REx.  Someone once said, "You could always tell the pioneers by the arrows in their back."  A recent software bug has cropped up that seems to be affecting many of the early build and higher mileage i3s that are mostly driven by the early adopters. The problem causes the car to go into reduced power mode, or in some cases shut down without warning when the display shows about 5% - 6% battery remaining. In mid 2016, BMW released a software update, (version 16-07-501) that was supposed to correct the issue, but for some unknown reason it didn't work on all of the vehicles. They then sent out letters to the early buyers to inform that they need a software update. Re...

Turn the volume up to hear the A/C compressor at work Now that dog days of summer are upon us, I've noticed quite a few i3 owners popping up on social media sites like the i3 Facebook Group , the MyBMWi3 Forum  and the BMW i Circuit Forum  asking if the loud noise they hear coming from under their car is normal. Like all EVs, the i3 is very quiet most of the time so when you hear a loud noise coming from the vehicle which you've never heard before, it's understandable to assume there may be something wrong. However in this case there is nothing to worry about. The loud noise you hear when you park the car or when you plug in to charge is just the air conditioning compressor running. The car's thermal management system is working to cool off the batteries. Keeping the batteries cool is vital to prolonging their life, and preventing early capacity loss. Some early Nissan LEAF owners who lived in warm weather climates experienced unacceptable battery capacity loss and actu...