Bicycle Frame Bag Electric Bicycle heavy duty battery bag Up to 18 lbs. OK ! This is a very Unique Item Because of the very Durable High quality and large capacity for holding an electric bike battery very firmly at the center of your bike frame. These are industrial grade Velcro straps that will last for years and can handle up to 18 lbs. steady load of battery without sagging or coming loose. Has a very heavy duty Dual zipper that allows your wires to stick out at any position on the bag just by close the zipper from both sides. and also has outer pockets for putting in extra cargo. Please measure the triangle of your frame and also keep in mind that this bag is flexible so it can squeeze into the corners of your frame.