We all need a backup!..its LitecigUSA
We all love our ego batteries. Even veteran vapers will have a few egos on standby. These use a 510 connection and last me 6+ hours. I bought a couple of these a few weeks ago. They work great, and they seem to hit a bit harder then my Joyetech 650 mah ego batteries. These will charge using any standard ego style charger. For 7.95 I really think this is a steal.
750Mah Riva Ego Style Battery - 510 connection. - $7.95 each
For people wondering about whats inside a Riva battery..