You cannot move an inch without your laptop and for the most part of your day you are found immersed in and engaged with your device. A dwindling or a weak battery therefore is no less than a nightmare for you. If you have to travel often on work or your profession involves a lot of field work you cannot expect to find a charging station everywhere. One option is to completely charge your laptop before venturing out so that you can access it throughout the day. But if the battery does not support the laptop there is no point stepping out with your device. Replace your battery as soon as possible. If you own a Compaq or HP laptop buy the original Compaq/HP battery for compatible models of Compaq Presario/Hewlett Packard. The compatible models are Compaq Presario CQ45, CQ40, CQ50, CQ70, CQ60 and Hewlett Packard G70, G50, HDX16, G60 and Pavilion dv4-1000, dv4t-1000, dv4z-1000. The lithium ion Compaq/HP battery makes sure that the laptop accompanies you in each of your endeavours. All you need to do is connect it to a power source after you replace the battery. The Compaq Presario/Hewlett Packard battery is efficient and charges quickly for longer use.