I added a backup battery to our solar powered bird bath but there was no easy way for me to "mount" the battery: no clips, no screws, no bracket, nothing! Luckily our solar panel is on our cucumber trellis so there are lot of places to secure it BUT the battery is a smooth box so string or paracord won't hold it very well; it would just slip out. 15 seconds later, it is now securely mounted with a Modl Infinity strap which can be easily tightened and it's grippy. Love how much these products solve everyday problems in a pinch! Grab some here. You won't regret it! https://modl.com/UCANBUILDTHIS