I have a drone from a company that I think folded-shop and no longer provides parts. Propel HD (the larger drones that were sold at Office Depot), have not one but two dead batteries (about the size of a typical Hotwheel). I dont solder or any such skill. I believe however they can be gutted, and the LiOn battery inside replaced. Does anyone (1) know of an online US service provider or (2) offer such a service having DONE this or familiar with the product / parts? Frustrating to own a large cool paper-weight just because the batteries no longer hold a charge.....