I was wondering if anyone knows of a source for the user\service manual for the Anritsu MZ144A rechargeable battery pack. It was made for the Anritsu MS610B series of spectrum analyzers. Some time ago, I found the battery pack ( I don't have the analyzer it was designed for ), but locating any user or service manual seems impossible online. The unit I have is complete, but is missing the batteries inside. I'm not sure what type of batteries it used ( for example- two 12V SLA batteries, or a series of special NiCd cells connected together. Inside the MZ144A is a 24V SMPS, along with some support circuitry as well. Does anyone have any technical data available on this unit?