So don't worry about keeping your computer plugged into the hp pavilion dv4 adapter as long as you need to
. In fact, it may be useful to have an extra AC adapter somewhere in your house or office to allow more portability without relying on the battery. If your hp dv5 battery has lost a significant amount of runtime as a result of the conditions detailed above, consider purchasing a replacement laptop battery to take back your portability when using AC power is not an option.