Chemistry: Li-Ion Original Amperage: 4.4 Volts: 14.8 Amp Hours: 4.4 Description: Rectangular battery with eight slit-type contacts on side Vendor Warranty: 12 monthsWorks with Compaq Presario X1000 Series, Compaq Business Notebook NX7000 Series, HP Pavilion ZT3000, and othersBattery Model 336962-001Li-Ion batteries produce the same energy as NiMH batteries but weigh approximately 35% lessLi-Ion batteries do not suffer from memory effect and 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 "Milliamp Hour" 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 Porta