The U488575PV-3S1P is a six-cell lithium-polymer pack used in the Gateway Ultra Slim 14.1 family, including the GWTC51427 and GWTC51427-BK. The same cell is also listed under Hasee part numbers U488575 / U488575PV and the Haier equivalent U438575PV-3S1P, so if you are cross-shopping, those numbers point at the same physical Continue Reading