9Cell DELL 1M215 Battery VS 6Cell DELL HC26Y Battery

DELL 1M215 Battery Replacement detail:
Battery Type:  Li-ion 
Voltage:  11.1V
Capacity: 90Wh / 9Cell
Weight:  434g
Color: Dark Grey

Compatible original Battery Code:
DELL :
1M215 312-0748 312-0749 312-0822 312-0823 312-0910
312-0977 312-7414 312-7415 CP284 CP289 CP294
CP296 DFNCH F732H FM332 FM335 FM338
FU571 G805H HW892 HW898 HW900 HW901
HW905 KY265 KY285 KY477 N970C NM631
PT434 W0X4F X855G XX327 XX334 XX337
YP459 YP463

DELL 1M215 Battery Fit machine:
DELL Latitude E6410 Series
DELL Latitude E6410 ATG Series
DELL Latitude E6510 Series
DELL Precision M4500 Series

DELL HC26Y Battery Replacement detail:
Battery Type:  Li-ion 
Voltage:  10.8V or 11.1V
Capacity: 5200mAh / 6Cell
Weight:  311g 
Color: Black

Compatible original Battery Code:
DELL :
312-0207 312-0210 D951T F681T HC26Y M15X6CPRIBABLK
M15X9CEXIBATLK NGPHW SQU-722 SQU-724

DELL HC26Y Battery Fit machine:
DELL Alienware M15x Series
DELL Alienware P08G Series