I ran the Losi Lipo when they just came out, and I only had problems with them, after some research, came to the conclusion it was probably the internal board they had, since then I switched to the dynamite pack and been running it thru the last year with no problems, but it's time to refresh it, because of the tight fit the external packaging has wore out. Maybe I'll give Losi another try, a fellow racer mentioned that board issue was resolved a long time ago........