Controller Case 2. It can be mounted on bicycle frame. Size: 200x100x73.8mm. This controller is not easy to install. It is for some special customers. Please don't buy it. Because it needs two nuts and two screws to install it. If you don't have it on your frame or somewhere, you will have no place to install it.
Extra shipping cost or other cost. We only can send batteries by TNT recently. So sometimes you maybe need to pay the extra shipping cost. You can use this link to pay the extra shipping cost. And sometimes, you may need to add some articles. You also can use this link to pay the additional cost.