Hello so I just got my first mech but I'm waiting on what will be my mech only batteries to arrive, in the mean time I wanted to build some coils for it. I just wanted advice on how to tell when my battery is getting low and it's time to switch it to a fresh one? I plan on starting with 0.3 ohm builds to be on safe side. I'll have 20Amp batteries so at 3.7v that's pulling around 15 amps from the battery. It's my understanding that trying to use a battery that's basically dead or super low isn't exactly like explosion dangerous but the battery heats up bad? Any info is appreciated thanks, also it'll be the Wismec Reuleaux RX Machina mod with the bravo RTA.