Ok so I bought this Provape off someone on the forum came with no batts no biggie so I ordered 2 14500 batts from Madvapes Ultrafire 14500 900 MaH 3.6 volts. Anyways these batteries/mod are very disappointing. My Riva battery with Boge lr cartos last me 5-6 hours same cartos on the Provape only last about 2.5 hours. Which confuses me considering the batterys are bigger. Did I get the wrong batteries or am I just expecting to much from them? Thanks for any help.