The V2 Extra-Long battery is exactly that… a whopping 380 mAh to last all day. Please note, this is our longer battery… but still less than an inch longer than a normal cigarette. It’s also the best e-Cig battery to use with V2 Cigs EX Blanks for a Shisha experience. With the vast majority of other e cigarette batteries running at around 3.7 Volts our batteries provide more power and more vapour. Usage on Full Battery: 300+ Puffs (approximate) Voltage: 4.2 volts Battery Rating: 380 mAh Charging Time: 4 Hours Length: 110 mm/4.3″ (140 mm/5.5″ with Cartridge) Diameter: 9.25 mm/0.37″ V2 Vapor Power: 4-Stars We think it has an old fashioned feel to it, like the days of cigarette holders, and when fancy crystal ash-trays were the norm although of course, we don’t use ash-trays anymore in the e-Cig era 🙂 Best of all, the V2 extra long battery lasts extra long too. Compared with the standard length V2 battery, this battery is designed to get an extra 100 puffs before recharging. That’s at least 300+ puffs For continuity we recommend that you always have at least 2 batteries so that you have one charging while you are vaping. With the appropriate care the life expectancy of your two batteries should be between 6 and 8 months – batteries can also last lot longer than this.