Using njoy's NPRO Duo (<or called "2n1").
'Somewhere...' in one of these threads, one of the posts indicated there's other e-cig sellers who offer the same size battery as the NPRO Duo uses. Lately every NPRO replacement battery I've ordered via njoy either doesn't work at all, or within matter of days the charging mechanism fails. IF different companies' batteries are interchangeable, can somebody give me the name of what other e-cig sales entity offers the same size battery as NPRO's. so i can order from them instead. Thanks.
'Somewhere...' in one of these threads, one of the posts indicated there's other e-cig sellers who offer the same size battery as the NPRO Duo uses. Lately every NPRO replacement battery I've ordered via njoy either doesn't work at all, or within matter of days the charging mechanism fails. IF different companies' batteries are interchangeable, can somebody give me the name of what other e-cig sales entity offers the same size battery as NPRO's. so i can order from them instead. Thanks.