I just tested the others to quell some curiosity, they all have to be replaced anyways. Wal-Mart Specials with a year warrantee will be the replacements. Id rather have Die Hard or Optimax but dont have $600 to spend on batteries. Damn money, theres never enough. You know Christ said the love of money is the route of all evil, well I definitely hate it so whats that mean?- Chaz