Lenovo IdeaPad U110 - Manual (Page 108)

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Appendix C. Features and Specifications
Power source
(AC adapter) ƒ Input rating of the AC adapter: 90-264 V ac, 47 to 63 Hz
ƒ 65 W
Battery
pack ƒ Lithium-ion (Li-Ion) battery pack
– Nominal voltage: 14.4 V dc (4 cells); 14.4 V/10.8V dc
(7 cells)
– Capacity: 18 Wh (4 cells) ; 57 Wh (7 cells)