I don’t know why, I just can’t seem to get a good range with the standard battery. I commute to work which is y 5miles to and from. On my way home, the battery is usually dead. I only use it to pedal on flats and uphills. It also doesn’t matter what setting I put it on, it always seems to run out like it’s on a timer. The speed is great, I just wish it went just a tiny, tiny bit faster. It’s quiet and has extreme acceleration. It makes the biking experience enjoying, especially when I’m using it for a stroll or to exercise. It will take a few months to deliver. With that said, if you are on the edge rather or not you want to have the bigger battery or more accessories, get them. The larger battery will make a big difference and I regret not getting the throttle. Wheel is easy to install but does add quite the weight depending on the size. KEEP the tires inflated, it will improve the battery.