Battery Biz Hi Capacity B-5842 Laptop Battery for HP/Compaq: * Warranty: 12 MONTHS * Chemistry: Li-Ion * Original Amp: 4.4 * Volts: 14.4 * AmpHours: 4.4 * Color: Dark Blue * Description: Rectangular shaped battery with six slit type connector on one side. * Number of Cells: 8 * Vendor Warranty: 12 MONTHS * Works with HP/Compaq Business Notebook NC8200 8400 NX7400 and more, PB992A What Are The Different Types of Rechargeable Battery Chemistries/Technologies?* Li-Ion has quickly become the standard for portable power in consumer devices. Li-Ion batteries produce the same energy as NiMH batteries but weigh approximately 35% less. Li-Ion batteries do not suffer from the memory effect AT ALL. They are also better for the environment. What does the mAh mean and how does it relate to how long my battery will last?* mAh stands for -inchMilliamp Hour-inch and it is the unit used to measure battery capacity. The higher the mAh rating of a battery, the longer it will operate at the device"s power consumption rate before needing to be recharged. Should I Recycle My Old Battery? How?* NiCad, NiMH and Li-Ion batteries should be recycled. Be environmentally conscious - do NOT throw these batteries in the trash. If you don"t know where your local recycling facility is, call the Portable Rechargeable Battery Association at 1-800-822-8837. They will provide you with the address of the recycling center nearest to you.