40 AMP 2300 mAh 18650 Battery From Vamped40 AMP 2300 mAh 18650 Battery is the newest and most powerful vape battery on the market right now from Vamped. If you are looking for the most powerful 18650 battery, then the Vamped 40 amp battery is a must have! The Vamped 18650 40 amp battery is 2300 mAh and packs a powerful punch pulse of 40 amps. A pulse rate is no longer than 60 seconds. The Vamped 40 amp battery has a maximum mAh of 2300 milliamps per hour.