I only have a G Pen battery (the tanks and charger broke.) I'm looking to buy a vape pen for BHO. Is there something compatible with the battery I have? Will I be spending more than I need to if I buy the new oil tanks and charger from Grenco? Should I just forget about my G Pen battery and buy a different pen, and if so, which one? Price isn't too important. I want quality/something that won't break.