Cheers forthe advice, will look at them all. It does come with a charger, off the car battery, takes 20 mins for 5-10 mins flying time, just want more packs so i don't have to keep waiting. Mmmmm inexperienced i am. LiPo?? don't know anything about them, why is it dangerous to reccommend them at this early stage, i'm only looking for power? Going to start by buying individual cells and making a pack up, component-shop has nearly the right thing, but it's 5 cell pack with 6v grrrrr, so close, yet so far... It would be great to have a higher capacity. dimensions of my pack are 30mm w x 29mm h x 20mm d and it's a squeeze. Many thanks again.