electronic bettery,USB passthrough charge

Electronic Cigarette Battery Rechargeable Battery with Manual Switch · Rechargeable Battery: Lithium , 3.7V-100mAh · Battery life : >300 times charger · Suitable with M201/M401/M402/ M601/M7/ M801 Rechargeable Battery with Manual Switch allows you to control the delivery of vapor. This is a huge benefit in that by holding the button, you will have full power! This means that you can expect optimal performance of Atomizer, longer battery life, as well as more vapor without electricity loss in the small circuits. You no longer have to check the LED display to ensure Battery is doing something it shouldn't do. Just push the switch and the e-cig works; it's just that easy! If you push the switch and there's no vapor, your Battery is empty and it's time for a re-charge. USB Pass-through Features: 1. Cable length: 1250mm 2. Packing size: 100mm(L)*70mm(W)*20mm(H) 3. Suitable with M201/M401/M402/M6/M601/M7/M801 4. Retractable, user friendly Do you sit at a desk all day? Then USB Pass-through is just for you! Pass-through is identical to a standard rechargeable battery, with the exception that instead of a light, a cable protrudes and at the other end is a USB connector. Plug the USB connector into your computer and the user can vape all day long without having to change batteries.