LC-P battery series from Panasonic is the Flame-Retardant version as compared to their regular LC battery series.
Below are examples of each:
Flame-Retardant LC-P
Non Flame-Retardant LC
Flame-Retardant Part Numbers:
LC-P127R2P
LC-P0612P
LC-P067R2P
LC-P0612P
LC-P067R2P1
LC-P127R2P1
LC-P1220AP
LC-P1220P
LC-P1228AP
LC-P1228P
LC-P1224P
LC-P1238P
Non Flame-Retardant Part Numbers:
LC-X1228AP
LC-R061R3P
LC-R064R5P
LC-R063R4P
LC-R121R3P
LC-R127R2P1
LC-R127R2P
LC-RA1212P
LC-RA1212P1
LC-RD1217P
LC-X1220AP
LC-X1228P
LC-R064R5P
LC-R0612P
LC-R067R2P1
LC-R121R3P
LC-R122R2P
LC-R123R4P
LC-RA1212P
LC-X1228AP
LC-X1228P
LC-R067R2P
LC-R122R2P
LC-R123R4P
LC-X1220P
LC-R1233P
LC-R0612P1
LC-RA1215P
LC-RA1215P1
LC-XC1221AP
LC-XC1238P
LC-R0612P1
LC-X1220P
LC-S122BU
LC-X1265P
LC-R064R2P