Hey guys! Got another quick one for you. So, I always drain my 18650s no lower than 3.7V - 3.6V. Is there any harm in draining them lower to say...... 3.4V or so? Just wanna make sure it's perfectly not harmful to the cells in any way. Going camping for one night in the morning and had no time to charge these batteries, so I'm gonna have to take them as is. Thanks guys!