I was concerned at 1st when I switched to lipo and now after using lipo for 6 months I am not concerned at all anymore I will charge the night before race day and theres no prob. I have even let it go 2 days when I go to 2 day events and no prob at all. I use losi lipos so I dont want to lose one but so far no need to use a cut off. Running a buggy and truggy now and one lipo is all I need for the day. I cary a backup just in case you never know. I had the old losi box take a dump, heat up and try to short out a lipo, drained it down to 11.5 volts, way to low for a 4 cel, and charged it back up no problems. Been using the same lipo that dumped for 6 months now. I love these lipos. I started using them in the receiver packs too and theres no need for a cut off just change after every race day, they arent even 1/2 used. Why install another component that can fail and cause a dnf.