Physio-Control LP 4

Jean-Marc Dugas

PCS Member
I know that this is a long shot, but I am looking for any information such as a user manual, service manual, etc. that would help me with identifying what type of batteries were used in the LP4.
I have called Physio / Stryker and they said that they do not have legacy manuals and I have searched the usual websites such as :

I have opened it up, but before I dig in I would like a manual to help me identify the components or the proper process.