I've been finishing my runs and my LIPO's have been at 3.5v after LVC. I think this is too low for the long term life of my batteries. I put this together and set it for 3.5v. You have to waterproof it as the least bit of water makes it think you have more cells than are actually connected. The alarm is pretty loud and I stop driving when the alarm stays on. My LIPO's now finish 3.7-3.8v. I feel better about it.