Yup a broken hard case is no issue. As long as all the cells are balancing fine and holding charge you are good to go. I've had one hardpack actually expand so much it broke apart the entire hard casing. Voltage on first cell was 8.77 and second cell was at .35 lol...needless to say it was one of the early generation Venom 2s 5000mah 20C lipos.