My solution? Use through the day, charge at night. I use other devices for chain vaping. As to the battery door design, it's only "difficult" because it is different to what you are accustomed to. It only takes me about 10 to 15 seconds to swap out the battery if I forget to charge it up. Hold the mod upside down with your thumb on the bottom plate (over the spring) and pointer finger over the top of the mod....spin out screws. Super simple.
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