Hp Pavilion N6400 Battery 4400mah

http://www.hp-laptop-battery.net/hp-pavilion-n6400-battery-4400mah.htm

HP OmniBook 6000 Series
OmniBook 6000, OmniBook 6000-F2044W,
OmniBook 6000-F2044WR, OmniBook 6000-F2044WT,
OmniBook 6000-F2045KT, OmniBook 6000-F2072K,
OmniBook 6000-F2072KG, OmniBook 6000-F2072KT,
OmniBook 6000-F2072KU, OmniBook 6000-F2072W,
OmniBook 6000-F2072WG, OmniBook 6000-F2072WT,
OmniBook 6000-F2072WU, OmniBook 6000-F2073K,
OmniBook 6000-F2073KG, OmniBook 6000-F2073KT,
OmniBook 6000-F2073KU, OmniBook 6000-F2073W,
OmniBook 6000-F2073WG, OmniBook 6000-F2073WT,
OmniBook 6000-F2073WU, OmniBook 6000-F2078K,
OmniBook 6000-F2078KT, OmniBook 6000-F2078W,
OmniBook 6000-F2078WR, OmniBook 6000-F2078WT,
OmniBook 6000-F2079K, OmniBook 6000-F2079KG,

http://www.hp-laptop-battery.net/hp-pavilion-n6400-battery-4400mah.htm