Battery P-P543 PP543 Panasonic Phone KX-A43 P-P543PA
Cordless Telephone Model - PANASONIC - KX-T7880
600mAh 3.6V NI-CD

Fits the following:

AT&T
9500 

BellSouth
TL6171 

Panasonic
KX-A43, KX-T7880, KX-T9300, KX-T9310, KX-T9320, KX-T9400, KX-T9410, KX-T9500, KX-T9500C, KX-T9505, KX-T9509,
KX-T9520, KX-T9525, KX-T9550, KX-T9550B, KX-TC903, KX-TC905, KX-TC930, KX-TC930B, KX-TC930DB, P-P543,
PP543, P-P543PA, PP543PA, P-P543PA1B, PP543PA1B, TYPE 43 

Radio Shack
23951 

Saft
 STB943 

SBC
S60514 

Southwestern Bell
S60514