ORBTRONIC Two 3400mAh Protected 18650 (Panasonic inside) Li-ion Rechargeable 3.7V Batteries & Xtar Battery Charger with Display built in New generation-3400mAh Panasonic 18650 li-ion cells are used to build these powerful PROTECTED Orbtronic batteries. VP1 3 Speed Charger- Built in Display: Voltage meter, real time battery charging progress -now you can watch on crystal clear blue display. Wall/Car Adapter, Battery protection holder are included.