This  battery is compatible with following part numbers:
for Dell
312-0366
312-0416
451-10289
HD438
KD186
TD611
TT720
UD532
WD414
XD187
YD120
This  battery is compatible with following models:
for Dell
for Inspiron 1300
for Inspiron B120
for Inspiron B130
for Latitude 120L