Cordless hedge trimmer (for parts) (Bear flat, BA2)

Gtech brand, 18v, cordless hedge & branch trimmer. We inherited this 6 years ago from family who no longer needed it, neither did we, so it's been sat in the attic since. We've tried charging it, but it's not working. We think the removable battery has leaked, but the removable blades are still incredibly sharp. If anyone handy wants to try fixing or needs parts.