Lithium polymer
Lenovo Main Battery Pack 11.52V 4170mAh
2-Power Main Battery Pack 11.1V 4400mAh
2-Power Main Battery Pack 11.4V 4000mAh
2-Power Main Battery Pack 11.52V 4948mAh 57Wh
2-Power Main Battery Pack 11.55V 4800mAh
Google Main Battery Pack