3x 11.1V 2800mAh Elios battery used to power Elios as well as the LiPo to USB charger and cell checker.
In the box:
x 1 Battery Checker
3 A / 35 W Lithium Polymer battery balance charger, with charging status indicator. RC charger: 17.4 V, 57 W, tablet USB charger: 5V