I believe that we were the 1st band in the UK to get the M80 pick up, so have had it a little while now. It's been great up until a few weeks ago when we turned up at a gig to find the battery flat. In the last two weeks we have fitted two battery's and now the 2nd one is flat. This last week we have even removed the pickup to eliminate the lead being the problem.

Before I return it to the shop does anyone know if this is this a known problem with a simple fix?