Well, it seems that Hasselblad batteries (made by Varta in Germany) for the 500 ELM and ELX models are becoming rarer by the minute and they cost an arm and a leg, at about $50.00 a piece. I have adapted a regular 9V battery to replace these original batteries. The cost is minimal when compared to the original ones and I have the plans on how to make them. Before I post the plans here though, I need to know how much interest is in here at TPF in this regard. The Hassy original batteries deliver 6V (I believe) and it only needs one although there are two round compartments for two batteries. The electric motor of the camera though can take up to 12V, hence the raise in voltage will not hurt it. It's a simple project that needs some parts from a Home Depot or Lowe's, or Ace Hardware and a small part from an electronics store such as RadioShack. Sooo... Any interest?