I have a 48V down tube battery that has a new case but, the batteries are nearly depleted. Before I bought a new battery to replace this one, I was getting about 5-6 miles on a charge. If you can rebuild the existing battery pack it might make for part of a kit for someone building a bike from scratch. I'll include the battery, the rail, and the charger. I'll accept just about any offer but you'll pay for shipping. I rather see somebody get some use out of it rather than disposeof it.