I'm beginning to collect some data on my Revolt E+ Pro range. I'm getting old and slow, and I can maintain only about 12 mph average on my road bike, riding a hilly route that has about 800 feet of climbing every 20-25 miles. I got the Revolt so my 10-15-yr-younger friends wouldn't have to slow down so much for me. But I don't need really high power, so to start with I set the power levels (using the RideControl app on my iPhone) at the lowest level in each power setting, dropping from 100% to 50% in the ECO mode, and from 360% to 300% in the highest power setting -- I don't want to be on a motorcycle, I just need some assist. On the maiden ride on the Revolt, I kept the power level low, turning it off on downhill sections, and did 22.6 miles at 13.5 mph average, with 65% of battery remaining. Then I did a ride with a couple of fast riders, totally in AUTO mode: 26.4 mi, 17.4 mph, 29% remaining. I didn't like AUTO mode -- it felt like the motor was constantly surging. Next, 38.7 mi, 13.9 mph, 33% remaining. Next, 20.3 mi, 12.9 mph, 71% remaining. And last, 26.7 mi, 14.3 mph, 64% remaining. You can do the math to calculate the range. The riding style I'm settling in to is to get a good workout similar to what I got on my non-e bikes, but ride faster. I can keep the power setting down to the ECO and BASIC modes except on the worst hills, and that gets me a range of between 60 and 70 miles on the standard 375 watt battery. When the Range Extender pack is available, then I'm going to be able to get a range of close to 100 miles at 13-14 mph. If I want to kick it up to 15-16 mph, which is as fast as most of my friends can ride, then I will still get a 75-mile range. That's not bad for a gravel bike with rack and fenders and a 77-yr-old rider. I'm still going to get an extra battery to carry on longer camping trips, but it looks like the 375 watt battery is going to work fine, particularly with the Range Extender. Giant says the Range Extender is in their warehouse, but they haven't been given a price for it yet.