As long as you don't massively over discharge them, don't charge on the wrong mode or fly with a dented battery you should be fine. If the battery shows any sign of swelling or dents/damage discontinue use and safely dispose of it. For added piece of mind might be worth making some sort of lipo safe. Army surplus ammo boxes work great if you drill an air hole in them to stop them bursting if you do have a lipo explosion. Although this is extremely unlikely if you have treated them correctly.