I've put about 120 miles on the new battery pack. I don't quite have the magic touch when it comes to "waking" them up! I've been trying to follow the instructions from my Bro but, tonight, when he offered to come up to work on them, or should I say "wake them", I jumped at it. He did this for me on the last pack and it went very well. Otherwise, it is great to have some acceleration, again with far less sag than the old pack.