Well I knew it would happen and I wondered if it would make a difference, I ran out of battery on a ride. It was my fault I had charged it but I guess when I put it back on the bike I must have pushed the on button. Then 2 days later when I went to ride it it was on... I didn't have time to put it back on the charger. So went for it.
Got about halfway thru the ride-it was super windy-And it did help me get up the worst part. but died just before another hill, but the added weight didn't make it any harder than it was before getting the wheel. I sure missed the power but I made it. And I finished the ride. But woo boy was I sore. I will not make that mistake again.