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The 2017 i3's 33.4 kWh battery pack is the same physical size as the current 21.6 kWh pack. BMW purposely designed the battery tray this way, so that future battery upgrades would be possible. Allowing the i3's battery to be upgraded was always BMW's plan. The concept of upgrading an electric vehicle's battery pack is certainly not a new one. In fact, it's something that many EV owners have been vocal about wanting to see offered. So the news that BMW will begin a battery upgrade program for their current i3 owners is good indeed, even if it may be something that isn't really necessary, or practical - yet. The big news in BMW i's May 2nd press release was, as expected, that BMW would be upgrading the i3's battery cells from 60 Ah to 94 Ah. This means the 2017 i3 will have an EPA range of 114 miles, up from the current 81 miles per charge. These new battery cells are physically the same size as the currently used cells, but can hold 50% more energy and ar

The 2017 i3 comes with 40% more range than the current model. It's also available in a nice new color: Protonic Blue The worst kept secret of the BMW i3 is officially no longer a "secret". BMW has formally announced that the 2017 i3 will have a new, longer range battery pack. They are indeed using the new Samsung 94 Ah battery cells that I speculated they would five months ago . Just as I predicted the new battery pack is increasing from 21.6 kWh to 33.4 kWh, which in an increase in capacity of about 50%. However the range of the i3 BEV will only increase by 40% from 81 miles per charge to 114, which is less than i predicted. That's because BMW is now using a larger buffer (the difference between the total battery capacity and the usable capacity) and also because the car now weighs more (roughly 100 lbs more) because the new higher capacity cells weigh slightly more than the ones they replace.  The slight increase in weight will likely only have a very minor effect o