A useful first port of call for base specifications of and quick knockdowns about Macs is EveryMac.
I have no first-hand knowledge of the Mac II, but you can be assured that one of the two batteries is indeed vital for startup. A battery holder would be a grouse thing to get hold of, but it is likely now to have to come from another Mac II. Posting an SOS in various places may net you some response.
The IIcx is not as accomplished as its sibling the IIci, but no slouch for all that, and also able to use up to 128MB of RAM with Mode32 installed (some Bank A RAM is used for video). With a suitable NuBus video card and a 13W3 terminated video cable (13W3 at both ends with a Workstation Portrait card) it will drive the Portrait Monitor very well in 16-256 greys (the latter with a Radius Pro card).
With a suitable adapter* it can use DayStar PowerCache accelerator cards. (Mine has a 33MHz replacing the on-board 16MHz, but 50MHz cards exist.)
There is at least one recent discussion, here, about IIcx startup. Trawling for the Mac II will also get you one about its batteries.
de
* As I should have said explicitly, given that the 68030 is socketted (rather than soldered-in), which is a much less less-commonly found configuration.
I have no first-hand knowledge of the Mac II, but you can be assured that one of the two batteries is indeed vital for startup. A battery holder would be a grouse thing to get hold of, but it is likely now to have to come from another Mac II. Posting an SOS in various places may net you some response.
The IIcx is not as accomplished as its sibling the IIci, but no slouch for all that, and also able to use up to 128MB of RAM with Mode32 installed (some Bank A RAM is used for video). With a suitable NuBus video card and a 13W3 terminated video cable (13W3 at both ends with a Workstation Portrait card) it will drive the Portrait Monitor very well in 16-256 greys (the latter with a Radius Pro card).
With a suitable adapter* it can use DayStar PowerCache accelerator cards. (Mine has a 33MHz replacing the on-board 16MHz, but 50MHz cards exist.)
There is at least one recent discussion, here, about IIcx startup. Trawling for the Mac II will also get you one about its batteries.
de
* As I should have said explicitly, given that the 68030 is socketted (rather than soldered-in), which is a much less less-commonly found configuration.