This a replaceable battery compatible with HP NC6100 NC6120 NX6100 NX6120. It will certainly make your laptop regain energy by the use of the high capacity battery. It provides you with the strong battery life， which is great to solve the problems of the short-term use life and poor performance. The standby time of laptop battery is determined mainly by the mAh. Under normal circumstances， the more cells decide the greater mAh， which provides longer standby time. With 9 cells， this battery will satisfy your demand. Made with fine workmanship and by strict examination， this battery is up to standard that you could use ittrustingly. It is good choice for your laptop especially when you are outdoors.                                    Features            You can get long hours of battery life without having to frequently plug into recharge with itNo memory effect， which can be charged even if it has not been used up yetUsing advanced cell technology and quality parts， it guarantees the stamina to meet your need of long work sessions and travelManufactured to the highest quality available with true enhanced performancePowered by high quality cellsCan be charged while it is installed and the computer is connected to AC power                                                             Specifications             Dimensions     7.99 x 2.76 x 0.79" / 20.3 x 7 x 2 cm (L x W x H)    <br> Weight     4.2 oz / 119 g    <br> Color     Black    <br> Capacity     7800mA    <br> Voltage     10.8V    <br> Cell     9 Cell    <br> Compatible with     HP NC6100 NC6120 NX6100 NX6120     <br>                                                             Package Includes            1 x Battery<br>1 x User Manual<br>