[Kenwood] TM-441A

[Carl Morgan, K8CM]

Not having a manual nor wishing to prematurely tear the radio apart, 
I' wondering if the memory backup battery, for the TM441A, is the 
same as in the TM-221A.  If you can reply to this, is the battery the 
same type and, if possible could you provide the manufacturer's part number?

I seem to remember that there is an ICOM part that can be substituted 
for the Kenwood that is both identical and far less expensive.

Appreciate any counsel you might be willing to give.

73  <>  Carl