Everytime I turn on the laptop it says "Insert Smart Card Reader".

Do you want to choose a high quality battery?I can give you some advice.you should Select the battery that made from the Japanese or Korean Li-ion battery cells.Purchase the hp battery only when it is necessary Some of our items have additional option of higher capacity Choose the higher one if there is quality.
Determine it clearly that whether it has pass the CE, UL, Rohs and other approval or not. This will be absolutely good certification for the quality guarantee.If you are considering a few different types of batteries, remember that you can submit forms for more than one type of battery.
The batteries like <a rel='nofollow' href="http://www.laptopbatteriesinc.ca/compaq-laptop-battery/compaq-presario-b1900-battery">Compaq Presario B1900 Battery</a>,<a rel='nofollow' href="http://www.laptopbatteriesinc.ca/compaq-laptop-battery/compaq-presario-1500-battery">Compaq Presario 1500 Battery</a> have High quality and cheap price,It would be worth the money spent.