I have some 3 cell LiPo batteries normally used for RC aero models and I'd like to try these externally with my K2. The batteries are 3.7V per cell 500mAH which will give 11.21 V fully charged. I do of course have a suitable charger for LiPo batteries. How will the K2 perform at this reduced voltage? Opinions please. 73, Denis F5VJC