Original Compaq Presario V2000 Li-Ion Battery  == 10.8V 4.0AHr   Original  battery and guaranteed to work in your laptop  -- not a cheap replacement       TESTED to hold charge and power up laptop several times in our testing  -- Not tested for actual duration. Our laptops are disassembled and are sold for the components/parts -- Because of the huge inventory we handle everyday, we are not be able to extensively test batteries for duration.  We provide money back guarantee if you are not satisfied but you will pay to ship the battery back to us. Please do not buy if you do not agree to this term.  Bid with confidence.