Note that HV batteries should not be left at 100% capacity any longer than needed prior to racing. I just bought some HV batts from ProMatch and the instructions noted this.
"the technology that makes HV packs so powerful also makes it important to care for the batteries properly."
-Always change using LV mode.
-Always balance charge
-Never charge more than a few hours prior to use.
-Always put into storage mode (3.8v per cell) with-in 2 hours after use.
-Lipo cut-off set at 3.5v
-Max charge rate of 3c