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(Source: Amitabh Bachchan Blog)

If your batteries are rechargeable, you should only ever use the correct charger for them if they are not described as rechargeable batteries, you should never attempt to recharge them

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Armed with this understanding of the nuances of vaporizer devices, one can appreciate how the common business model of selling cartridges with a universal 510 threaded connection that can be used in conjunction with any number of batteries, any number of power settings, and filled with a variety of formulations makes it difficult to guarantee what is produced during vaporization