Thanks to all those who have shared their experiences so I could learn the easy way. I'm wondering if anyone else has had the misfortune of battery failure. I placed my battery on my sidewalk while getting my bike out of storage, and it fell onto its side. Within one day it was no longer working. I have nearly 500 km on my new Mariner and have contacted Voltbike support a few days ago, with no reply from them yet. I'm hoping that it can be repaired locally, if it needs to be. I have taken many precautions, adjusting my brakes as needed, sealing the control box with silicone as was suggested, added a bash-guard on the inside of the crank, checked all bolts and screws for tightness, added a mirror, found a good helmet and added a powerful light on it, and added slime in my tires. I won't set the battery down on end any longer. I'm surprised it only took one fall to damage the battery.