Does your charger show the internal resistance of the cells in that pack ? I'm curious to know what you may be reading on that battery. Mines still new and I'll be looking at it closer now to see if it's decent or not. It's too new to tell....I like to get a few cycles in first. Also....do you run off your Lipo alarm to tell you when to shut down...or do you just stop when the ESC hits the low voltage cut off ? Most ESC's will ignore voltage sags that are brief and just keep going. Most of the long time RCers will notice a slow down with a bad cell. What voltage do you use for low....I normally use 3.2 to 3.4 volts. Thanks much. I got the ESC you are using on my list of things to purchase.....looks real nice. I like it more than the Tekin also. I like looking at data as much as driving so that's on my radar. I'm trying to move up in technology also...I want to use my smart phone with the ESC. Seems much more awesome...how do you like the ESC ? Can you post a screen shot of what you see on your phone. Thanks again.