Well, it's sorta battery related. Or rather, power related. Those coils are not designed to run at 75W. Even eleaf "rates" them at 30-50W not the 75W you're taking it out to. When you start a new coil, start out with a low power setting (wattage). Increase it slowly until you get into the range (get around 30) the vape tastes best for you. Don't keep going until you burn the coil. Every type of tank/coil/and juice will have iss own "sweet spot". Once you know it, you'll know what wattage to set. However, ALL new coils should be primed and ramped up slowly over several puffs until it's in the range that's best for you. Good luck!
There's lots of god info around here, and that Pico is a nice little mod. You'll get it working just fine with a little patience.