Exway Ripple is available now as 99Wh battery (air travel friendly) and 159Wh. What makes the 99wh battery air travel friendly is that it meets most aviation association standard of 99wh capacity. Individual airlines reserve the right to refuse this battery for any reason. Always check before flying and if the battery is not allowed to travel consider shipping it rather than giving it up to airport authorities. In any case Exway Canada is not responsible for batteries confiscated or given up to airport authorities.